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Rust HP, König T, Simon GH, Nowicki M, Simic-Milosevic V, Thielsch G, Heyde M, Freund HJ. A portable microevaporator for low temperature single atom studies by scanning tunneling and dynamic force microscopy. Rev Sci Instrum 2009; 80:113705. [PMID: 19947735 DOI: 10.1063/1.3266971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Here, we present a microevaporator setup for single adatom deposition at low temperature, which is a prerequisite for most single atom studies with scanning probe techniques. The construction of the microevaporator is based on the tungsten filament of a modified halogen lamp, covered with the required adsorbate. Very stable evaporation conditions were obtained, which were controlled by the filament current. The installation of this microevaporator on a manipulator enabled its transportation directly to the sample at the microscope kept at 5 K. In this way, the controlled deposition of Li onto Ag(100), Li, Pd, and Au onto MgO/Ag(001) as well as Au onto alumina/NiAl(110) at low temperature has been performed. The obtained images recorded after the deposition show the presence of single Li/Au atoms on the sample surfaces as a prove for successful dispersion of single atoms onto the sample surface using this technique.
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Affiliation(s)
- H-P Rust
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
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Simic-Milosevic V, Heyde M, Nilius N, König T, Rust HP, Sterrer M, Risse T, Freund HJ, Giordano L, Pacchioni G. Au Dimers on Thin MgO(001) Films: Flat and Charged or Upright and Neutral? J Am Chem Soc 2008; 130:7814-5. [DOI: 10.1021/ja8024388] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- V. Simic-Milosevic
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - M. Heyde
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - N. Nilius
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - T. König
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - H.-P. Rust
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - M. Sterrer
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - T. Risse
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - H.-J. Freund
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - L. Giordano
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
| | - G. Pacchioni
- Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi, 53, Milano, Italy
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Simic-Milosevic V, Mehlhorn M, Rieder KH, Meyer J, Morgenstern K. Electron induced ortho-meta isomerization of single molecules. Phys Rev Lett 2007; 98:116102. [PMID: 17501068 DOI: 10.1103/physrevlett.98.116102] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2006] [Indexed: 05/15/2023]
Abstract
A scanning tunneling microscope operating at 5 K is used to induce the isomerization of single chloronitrobenzene molecules on Cu(111) and verify the reaction. The threshold voltage of (227+/-7) mV for this reaction is explained based on electron-induced vibrational heating. We propose that the isomerization is initiated by simultaneous excitation of two vibrational molecular modes via inelastically tunneling electrons. This excitation results in a shift of the distribution probability of chlorine and hydrogen positions, which facilitates their mutual exchange.
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Affiliation(s)
- V Simic-Milosevic
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimalle 14, 14195 Berlin, Germany.
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