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Quantum Internal Structure of Plasmons. PHYSICAL REVIEW LETTERS 2021; 127:196403. [PMID: 34797157 DOI: 10.1103/physrevlett.127.196403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
Plasmons are usually described in terms of macroscopic quantities such as electric fields and currents. However, as fundamental excitations of metals, they are also quantum objects with internal structure. We demonstrate that this can induce an intrinsic dipole moment which is tied to the quantum geometry of the Hilbert space of plasmon states. This quantum geometric dipole offers a unique handle for manipulation of plasmon dynamics via density modulations and electric fields. As a concrete example, we demonstrate that scattering of plasmons with a nonvanishing quantum geometric dipole from impurities is nonreciprocal, skewing in different directions in a valley-dependent fashion. This internal structure can be used to control plasmon trajectories in two dimensional materials.
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Plasmonic Dirac Cone in Twisted Bilayer Graphene. PHYSICAL REVIEW LETTERS 2020; 125:256804. [PMID: 33416378 DOI: 10.1103/physrevlett.125.256804] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
We discuss plasmons of biased twisted bilayer graphene when the Fermi level lies inside the gap. The collective excitations are a network of chiral edge plasmons (CEP) entirely composed of excitations in the topological electronic edge states that appear at the AB-BA interfaces. The CEP form a hexagonal network with a unique energy scale ε_{p}=(e^{2})/(ε_{0}εt_{0}) with t_{0} the moiré lattice constant and ε the dielectric constant. From the dielectric matrix we obtain the plasmon spectra that has two main characteristics: (i) a diverging density of states at zero energy, and (ii) the presence of a plasmonic Dirac cone at ℏω∼ε_{p}/2 with sound velocity v_{D}=0.0075c, which is formed by zigzag and armchair current oscillations. A network model reveals that the antisymmetry of the plasmon bands implies that CEP scatter at the hexagon vertices maximally in the deflected chiral outgoing directions, with a current ratio of 4/9 into each of the deflected directions and 1/9 into the forward one. We show that scanning near-field microscopy should be able to observe the predicted plasmonic Dirac cone and its broken symmetry phases.
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Nonlocal Quantum Effects in Plasmons of Graphene Superlattices. PHYSICAL REVIEW LETTERS 2020; 124:257401. [PMID: 32639766 DOI: 10.1103/physrevlett.124.257401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
By using a nonlocal, quantum mechanical response function we study graphene plasmons in a one-dimensional superlattice (SL) potential V_{0}cosG_{0}x. The SL introduces a quantum energy scale E_{G}∼ℏv_{F}G_{0} associated with electronic subband transitions. At energies lower than E_{G}, the plasmon dispersion is highly anisotropic; plasmons propagate perpendicularly to the SL axis, but become damped by electronic transitions along the SL direction. These results question the validity of semiclassical approximations for describing low energy plasmons in periodic structures. At higher energies, the dispersion becomes isotropic and Drude-like with effective Drude weights related to the average of the absolute value of the local chemical potential. Full quantum mechanical treatment of the kinetic energy thus introduces nonlocal effects that delocalize the plasmons in the SL, making the system behave as a metamaterial even near singular points where the charge density vanishes.
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Abstract
We study a two-dimensional electron gas exchange coupled to a system of classical magnetic ions. For large Rashba spin-orbit coupling, a single electron can become self-trapped in a skyrmion spin texture self-induced in the magnetic ions system. This new quasiparticle carries electrical and topological charge as well as a large spin, and we named it as magnetic skyrmionic polaron. We study a range of parameters; temperature, exchange coupling, Rashba coupling, and magnetic field, for which the magnetic skyrmionic polaron is the fundamental state in the system. The dynamics of this quasiparticle is studied using the collective coordinate approximation, and we obtain that in the presence of an electric field the new quasiparticle shows, due to the chirality of the skyrmion, a Hall effect. Finally, we argue that the magnetic skyrmionic polarons can be found in large Rashba spin-orbit coupling semiconductors as GeMnTe.
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Symmetries of quantum transport with Rashba spin–orbit: graphene spintronics. Phys Chem Chem Phys 2015; 17:16469-75. [DOI: 10.1039/c5cp01637a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The lack of some spatial symmetries in planar devices with Rashba spin–orbit interactions opens up the possibility of producing spin polarized electrical currents in the absence of external magnetic fields or magnetic impurities.
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Signatures of a two-dimensional ferromagnetic electron gas at the La0.7Sr0.3MnO3/SrTiO3 interface arising from orbital reconstruction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7516-7520. [PMID: 25327446 DOI: 10.1002/adma.201402829] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 08/29/2014] [Indexed: 06/04/2023]
Abstract
The magnetoresistance of La0.7Sr0.3MnO3/SrTiO3 superlattices with magnetic field rotating out-of-plane shows unexpected peaks for in-plane fields. Resistivity calculations with spin-orbit coupling reveal that orbital reconstruction at the manganite interface leads to a 2D ferromagnetic electron gas coupled antiparallel to the manganite "bulk". These orbital and magnetic reconstructions are supported by X-ray linear dichroism and ab initio calculations.
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Nanophysics in graphene: neutrino physics in quantum rings and superlattices. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2010; 368:5483-5497. [PMID: 21041226 DOI: 10.1098/rsta.2010.0210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Electrons in graphene at low energy obey a two-dimensional Dirac equation, closely analogous to that of neutrinos. As a result, quantum mechanical effects when the system is confined or subjected to potentials at the nanoscale may be quite different from what happens in conventional electronic systems. In this article, we review recent progress on two systems where this is indeed the case: quantum rings and graphene electrons in a superlattice potential. In the former case, we demonstrate that the spectrum reveals signatures of 'effective time-reversal symmetry breaking', in which the spectra are most naturally interpreted in terms of effective magnetic flux contained in the ring, even when no real flux is present. A one-dimensional superlattice potential is shown to induce strong band-structure changes, allowing the number of Dirac points at zero energy to be manipulated by the strength and/or period of the potential. The emergence of new Dirac points is shown to be accompanied by strong signatures in the conduction properties of the system.
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All-manganite tunnel junctions with interface-induced barrier magnetism. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:5029-5034. [PMID: 20824666 DOI: 10.1002/adma.201002067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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9
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Effective magnetic fields in graphene superlattices. PHYSICAL REVIEW LETTERS 2010; 105:156801. [PMID: 21230925 DOI: 10.1103/physrevlett.105.156801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Indexed: 05/30/2023]
Abstract
We demonstrate that the electronic spectrum of graphene in a one-dimensional periodic potential will develop a Landau level spectrum when the potential magnitude varies slowly in space. The effect is related to extra Dirac points generated by the potential whose positions are sensitive to its magnitude. We exploit a chiral symmetry in the Dirac Hamiltonian description with a superlattice potential to show that the low energy theory contains an effective magnetic field. Numerical diagonalization of the Dirac equation confirms the presence of Landau levels. Possible consequences for transport are discussed.
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Zero Landau level in folded graphene nanoribbons. PHYSICAL REVIEW LETTERS 2010; 105:106802. [PMID: 20867537 DOI: 10.1103/physrevlett.105.106802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Indexed: 05/29/2023]
Abstract
Graphene nanoribbons can be folded into a double layer system keeping the two layers decoupled. In the quantum Hall regime folds behave as a new type of Hall bar edge. We show that the symmetry properties of the zero Landau level in metallic nanoribbons dictate that the zero energy edge states traversing a fold are perfectly transmitted onto the opposite layer. This result is valid irrespective of fold geometry, magnetic field strength, and crystallographic orientation of the nanoribbon. Backscattering suppression on the N=0 Hall plateau is ultimately due to the orthogonality of forward and backward channels, much like in the Klein paradox.
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Carbon nanoelectronics: unzipping tubes into graphene ribbons. PHYSICAL REVIEW LETTERS 2009; 103:086801. [PMID: 19792746 DOI: 10.1103/physrevlett.103.086801] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Indexed: 05/28/2023]
Abstract
We report on the transport properties of novel carbon nanostructures made of partially unzipped carbon nanotubes, which can be regarded as a seamless junction of a tube and a nanoribbon. We find that graphene nanoribbons act at certain energy ranges as perfect valley filters for carbon nanotubes, with the maximum possible conductance. Our results show that a partially unzipped carbon nanotube is a magnetoresistive device, with a very large value of magnetoresistance. We explore the properties of several structures combining nanotubes and graphene nanoribbons, demonstrating that they behave as optimal contacts for each other, and opening a new route for the design of mixed graphene-nanotube devices.
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Emerging zero modes for graphene in a periodic potential. PHYSICAL REVIEW LETTERS 2009; 103:046809. [PMID: 19659387 DOI: 10.1103/physrevlett.103.046809] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Indexed: 05/28/2023]
Abstract
We investigate the effect of a periodic potential on the electronic states and conductance of graphene. It is demonstrated that for a cosine potential V(x) = V_{0}cos(G_{0}x), new zero energy states emerge whenever J0(2V_{0}/variant Planck's over 2piv_{F}G_{0}) = 0. The phase of the wave functions of these states is shown to be related to periodic solutions of the equation of motion of an overdamped particle in a periodic potential, subject to a periodic force. Numerical solutions of the Dirac equation confirm the existence of these states, and demonstrate the chirality of states in their vicinity. Conductance resonances are shown to accompany the emergence of these induced Dirac points.
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Abstract
We study RKKY interactions between local magnetic moments for both doped and undoped graphene. In the former case interactions for moments located on definite sublattices fall off as 1/R2, whereas for those placed at interstitial sites they decay as 1/R3. The interactions are primarily (anti)ferromagnetic for moments on (opposite) equivalent sublattices, suggesting that at low temperature dilute magnetic moments embedded in graphene can order into a state analogous to that of a dilute antiferromagnet. In the undoped case we find no net magnetic moment in the ground state, and demonstrate numerically this effect for ribbons, suggesting the possibility of an unusual spin-transfer device.
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Luttinger liquid at the edge of undoped graphene in a strong magnetic field. PHYSICAL REVIEW LETTERS 2006; 97:116805. [PMID: 17025918 DOI: 10.1103/physrevlett.97.116805] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2006] [Indexed: 05/12/2023]
Abstract
We demonstrate that an undoped two-dimensional carbon plane (graphene) whose bulk is in the integer quantum Hall regime supports a nonchiral Luttinger liquid at an armchair edge. This behavior arises due to the unusual dispersion of the noninteracting edge states, causing a crossing of bands with different valley and spin indices at the edge. We demonstrate that this stabilizes a domain wall structure with a spontaneously ordered phase degree of freedom. This coherent domain wall supports gapless charged excitations, and has a power law tunneling I-V with a nonintegral exponent. In proximity to a bulk lead, the edge may undergo a quantum phase transition between the Luttinger liquid phase and a metallic state.
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Abstract
Orbital order present in several transition metal compounds could give rise to topological defects. Here we argue that the topological defects in orbital ordered half doped manganites are orbital solitons that carry a charge of +/-e/2. When extra charge is added to the system an array of solitons is formed and an incommensurate solitonic phase occurs. The striking experimental asymmetry in the phase diagram as electrons or holes are added to half doped manganites is explained by the energy difference between positive and negative charged solitons. The presence of nanoscale inhomogeneities in manganites is naturally explained by the existence of solitonic phases.
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Ferromagnetism mediated by few electrons in a semimagnetic quantum dot. PHYSICAL REVIEW LETTERS 2004; 93:117201. [PMID: 15447373 DOI: 10.1103/physrevlett.93.117201] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2004] [Indexed: 05/24/2023]
Abstract
A (II,Mn)VI diluted magnetic semiconductor quantum dot with an integer number of electrons controlled with a gate voltage is considered. We show that a single electron is able to induce a collective spontaneous magnetization of the Mn spins, overcoming the short range antiferromagnetic interactions, at a temperature order of 1 K, 2 orders of magnitude above the ordering temperature in bulk. The magnetic behavior of the dot depends dramatically on the parity of the number of electrons in the dot.
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Continuous charge modulated diagonal phase in manganites. PHYSICAL REVIEW LETTERS 2004; 92:127202. [PMID: 15089701 DOI: 10.1103/physrevlett.92.127202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2003] [Indexed: 05/24/2023]
Abstract
We present a novel ground state that explains the continuous charge modulated diagonal order recently observed in manganese oxides, at hole concentrations x larger than one-half. In this diagonal phase the charge is modulated with a predominant Fourier component inversely proportional to 1-x. Magnetically this state consists of antiferromagnetically coupled zigzag chains. For a wide range of physical parameters such as electron-phonon coupling, antiferromagnetic interaction between Mn ions, and on-site Coulomb repulsion, the diagonal phase is the ground state of the system. Also we find that the diagonal modulation of the electron density is only a small fraction of the average charge, a much smaller modulation than the one obtained by distributing Mn+3 and Mn+4 ions. We discuss also the spin and orbital structure properties of this new diagonal phase.
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Lattice-spin mechanism in colossal magnetoresistive manganites. PHYSICAL REVIEW LETTERS 2002; 88:136401. [PMID: 11955111 DOI: 10.1103/physrevlett.88.136401] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2001] [Indexed: 05/23/2023]
Abstract
We present a single-orbital double-exchange model, coupled with cooperative phonons (the so called breathing modes of the oxygen octahedra in manganites). The model is studied with Monte Carlo simulations. For a finite range of doping and coupling constants, a first-order metal-insulator phase transition is found, which coincides with the paramagnetic-ferromagnetic phase transition. The insulating state is due to the self-trapping of every carrier within an oxygen octahedron distortion.
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19
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Phase diagram of diluted magnetic semiconductor quantum wells. PHYSICAL REVIEW LETTERS 2000; 85:2384-2387. [PMID: 10978016 DOI: 10.1103/physrevlett.85.2384] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2000] [Indexed: 05/23/2023]
Abstract
The phase diagram of diluted magnetic semiconductor quantum wells is investigated. The interaction between the carriers in the hole gas can lead to first-order ferromagnetic transitions, which remain abrupt in applied fields. These transitions can be induced by magnetic fields or, in double-layer systems, by electric fields. We make a number of precise experimental predictions for observing these first-order phase transitions.
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20
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Charged pseudospin textures in double-layer quantum Hall systems: Bimerons and meron crystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:16888-16902. [PMID: 9985817 DOI: 10.1103/physrevb.54.16888] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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21
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Internal Excitations and Dissipative Damping of Quantum Hall Skyrmions. PHYSICAL REVIEW LETTERS 1996; 77:1572-1575. [PMID: 10063112 DOI: 10.1103/physrevlett.77.1572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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22
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Charge Density Wave Behavior in the Integer Quantum Hall Effect Edge States. PHYSICAL REVIEW LETTERS 1996; 77:1358-1361. [PMID: 10063056 DOI: 10.1103/physrevlett.77.1358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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23
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Skyrmions without sigma models in quantum Hall ferromagnets. PHYSICAL REVIEW LETTERS 1996; 76:2153-2156. [PMID: 10060619 DOI: 10.1103/physrevlett.76.2153] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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25
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Composite fermions traversing a potential barrier. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:17259-17262. [PMID: 9978751 DOI: 10.1103/physrevb.51.17259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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26
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Collective modes of soliton-lattice states in double-quantum-well systems. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:13475-13490. [PMID: 9978151 DOI: 10.1103/physrevb.51.13475] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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27
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Charged spin-texture excitations and the Hartree-Fock approximation in the quantum Hall effect. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:11018-11021. [PMID: 9975209 DOI: 10.1103/physrevb.50.11018] [Citation(s) in RCA: 117] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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28
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Self-consistent Hartree description of N electrons in a quantum dot with a magnetic field. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:5718-5721. [PMID: 10011536 DOI: 10.1103/physrevb.49.5718] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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30
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Hall resistance of a two-dimensional electron gas in the presence of magnetic-flux tubes. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:15961-15964. [PMID: 10006001 DOI: 10.1103/physrevb.47.15961] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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31
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Phase separation of edge states in the integer quantum Hall regime. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:13884-13886. [PMID: 10005715 DOI: 10.1103/physrevb.47.13884] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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32
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Many-body effects on the symmetric-antisymmetric gap in double quantum wells in strong magnetic fields. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:4585-4591. [PMID: 10006606 DOI: 10.1103/physrevb.47.4585] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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33
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Broken-symmetry ground states for the two-dimensional electron gas in a double-quantum-well system. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:10239-10250. [PMID: 10002867 DOI: 10.1103/physrevb.46.10239] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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34
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Spectroscopic measurement of large exchange enhancement of a spin-polarized 2D electron gas. PHYSICAL REVIEW LETTERS 1992; 68:3623-3626. [PMID: 10045751 DOI: 10.1103/physrevlett.68.3623] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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35
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Electromodulation of magnetorotons in coupled quasi-two-dimensional electron gases. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:10676-10679. [PMID: 9999091 DOI: 10.1103/physrevb.44.10676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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36
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Energy spectrum of electrons in a parabolic quantum well in a strong magnetic field. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:3772-3781. [PMID: 10000004 DOI: 10.1103/physrevb.44.3772] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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37
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Collective modes in quantum-dot arrays in magnetic fields. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:11708-11713. [PMID: 9995475 DOI: 10.1103/physrevb.42.11708] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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38
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Electronic and optical properties of a superlattice in a parabolic potential. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:2886-2892. [PMID: 9995778 DOI: 10.1103/physrevb.42.2886] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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39
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Energy spectrum and charge-density-wave instability of a double quantum well in a magnetic field. PHYSICAL REVIEW LETTERS 1990; 65:903-906. [PMID: 10043052 DOI: 10.1103/physrevlett.65.903] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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40
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Infrared optical absorption in imperfect parabolic quantum wells. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:1240-1247. [PMID: 9995532 DOI: 10.1103/physrevb.42.1240] [Citation(s) in RCA: 127] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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41
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Spin-density-wave instability in wide parabolic quantum wells. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:11634-11638. [PMID: 9991763 DOI: 10.1103/physrevb.40.11634] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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42
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Optical and magneto-optical absorption in parabolic quantum wells. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:10647-10649. [PMID: 9991623 DOI: 10.1103/physrevb.40.10647] [Citation(s) in RCA: 243] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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43
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Coherent and sequential tunneling in double barriers with transverse magnetic fields. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:8548-8551. [PMID: 9991325 DOI: 10.1103/physrevb.40.8548] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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44
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Interface states in CdTe-ZnTe strained superlattices. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 40:3955-3961. [PMID: 9992368 DOI: 10.1103/physrevb.40.3955] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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45
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Effect of a high transverse magnetic field on the tunneling through barriers between semiconductors and superlattices. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 38:9649-9656. [PMID: 9945786 DOI: 10.1103/physrevb.38.9649] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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46
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Generalized transfer Hamiltonian for the study of resonant tunneling. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 38:10507-10511. [PMID: 9945904 DOI: 10.1103/physrevb.38.10507] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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47
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Band offsets in heterostructures with thin interlayers. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 38:8185-8191. [PMID: 9945570 DOI: 10.1103/physrevb.38.8185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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48
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Full-potential linear-muffin-tin-orbital calculation of phonon frequencies in semiconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 38:1392-1396. [PMID: 9946402 DOI: 10.1103/physrevb.38.1392] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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49
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Calculated optical properties of semiconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1988; 37:1167-1179. [PMID: 9944623 DOI: 10.1103/physrevb.37.1167] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Resonant Raman scattering in GaAs-Ga1-xAlxAs quantum wells in an electric field. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 36:6054-6057. [PMID: 9942287 DOI: 10.1103/physrevb.36.6054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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