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Nonequilibrium noise and fractional charge in the quantum Hall effect
Abstract
We study nonequilibrium edge state transport in the fractional quantum Hall regime at filling g=1/m. Tunneling of Laughlin quasiparticles between edges is shown to generate both current and voltage shot noise with a universal ratio of noise amplitudes given by (${ge}^{2}$/h${)}^{2}$. In the weak backscattering limit we predict a current shot noise satisfying Poisson statistics with charge ge, which should enable a direct measurement of the fractional charge of the quasiparticle. On resonance the quasiparticles tunnel in pairs and the effective charge entering the current shot noise becomes 2ge.
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Citations
Cites
Anomalous Quantum Hall Effect: An Incompressible Quantum Fluid with Fractionally Charged Excitations
Laughlin, R. B. (1983) · Physical Review Letters · doi:10.1103/physrevlett.50.1395 · Cited by 5,749
Cited by
Chiral Luttinger liquids at the fractional quantum Hall edge
Chang, A. M. (2003) · Reviews of Modern Physics · doi:10.1103/revmodphys.75.1449 · Cited by 391
Nobel Lecture: Fractional quantization
Laughlin, R. B. (1999) · Reviews of Modern Physics · doi:10.1103/revmodphys.71.863 · Cited by 321
Two point-contact interferometer for quantum Hall systems
de C. Chamon, C., Freed, D. E., Kivelson, S. A., Sondhi, S. L., & Wen, X. G. (1997) · Physical Review B · doi:10.1103/physrevb.55.2331 · Cited by 317
Current fluctuations in mesoscopic systems with Andreev scattering
Anantram, M. P., & Datta, S. (1996) · Physical Review B · doi:10.1103/physrevb.53.16390 · Cited by 291
Metadata
- Authors
- Kane, C. L., & Fisher, M. P. A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1994-01-31
- Volume
- 72
- Issue
- 5
- Pages
- 724-727
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W1971776255
- Cited by
- 304
- References
- 1
- FWCI
- 5.13
- Type
- journal article
- Language
- en
- Open access
- closed
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