Wu F, Queipo P, Nasibulin A, Tsuneta T, Wang TH, Kauppinen E, Hakonen PJ. Shot noise with interaction effects in single-walled carbon nanotubes.
Phys Rev Lett 2007;
99:156803. [PMID:
17995202 DOI:
10.1103/physrevlett.99.156803]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2007] [Revised: 06/01/2007] [Indexed: 05/25/2023]
Abstract
We have measured shot noise in single-walled carbon nanotubes with good contacts at 4.2 K at low frequencies (f=600-850 MHz). We find a strong modulation of shot noise over the Fabry-Perot pattern; in terms of the differential Fano factor the variation ranges over 0.4-1.2. The shot noise variation, in combination with differential conductance, is analyzed using two (spin-degenerate) modes with different, energy-dependent transmission coefficients. Deviations from the predictions from Landauer-Buttiker formalism are assigned to electron-electron interactions.
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