Shot-noise signatures of 0.7 structure and spin in a quantum point contact

L. Dicarlo; Y. Zhang; D. T. McClure; D. J. Reilly; C. M. Marcus; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevLett.97.036810

Shot-noise signatures of 0.7 structure and spin in a quantum point contact

L. Dicarlo, Y. Zhang, D. T. McClure, D. J. Reilly, C. M. Marcus, L. N. Pfeiffer, K. W. West

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77 Scopus citations

Abstract

We report simultaneous measurement of shot noise and dc transport in a quantum point contact as a function of source-drain bias, gate voltage, and in-plane magnetic field. Shot noise at zero field exhibits an asymmetry related to the 0.7 structure in conductance. The asymmetry in noise evolves smoothly into the symmetric signature of spin-resolved electron transmission at high field. Comparison to a phenomenological model with density-dependent level splitting yields good quantitative agreement.

Original language	English (US)
Article number	036810
Journal	Physical review letters
Volume	97
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.97.036810
State	Published - 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.97.036810

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abstract = "We report simultaneous measurement of shot noise and dc transport in a quantum point contact as a function of source-drain bias, gate voltage, and in-plane magnetic field. Shot noise at zero field exhibits an asymmetry related to the 0.7 structure in conductance. The asymmetry in noise evolves smoothly into the symmetric signature of spin-resolved electron transmission at high field. Comparison to a phenomenological model with density-dependent level splitting yields good quantitative agreement.",

author = "L. Dicarlo and Y. Zhang and McClure, {D. T.} and Reilly, {D. J.} and Marcus, {C. M.} and Pfeiffer, {L. N.} and West, {K. W.}",

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AU - Dicarlo, L.

AU - Zhang, Y.

AU - McClure, D. T.

AU - Reilly, D. J.

AU - Marcus, C. M.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2006

Y1 - 2006

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AB - We report simultaneous measurement of shot noise and dc transport in a quantum point contact as a function of source-drain bias, gate voltage, and in-plane magnetic field. Shot noise at zero field exhibits an asymmetry related to the 0.7 structure in conductance. The asymmetry in noise evolves smoothly into the symmetric signature of spin-resolved electron transmission at high field. Comparison to a phenomenological model with density-dependent level splitting yields good quantitative agreement.

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ER -

Shot-noise signatures of 0.7 structure and spin in a quantum point contact

Abstract

All Science Journal Classification (ASJC) codes

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