Phase coherence, interference, and conductance quantization in a confined two-dimensional hole gas

I. Zailer; J. E. F. Frost; C. J. B. Ford; M. Pepper; M. Y. Simmons; D. A. Ritchie; J. T. Nicholls; G. A. C. Jones

doi:10.1103/PhysRevB.49.5101

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Phase coherence, interference, and conductance quantization in a confined two-dimensional hole gas

I. Zailer, J. E. F. Frost, C. J. B. Ford, M. Pepper, M. Y. Simmons, D. A. Ritchie, J. T. Nicholls, and G. A. C. Jones

Phys. Rev. B 49, 5101(R) – Published 15 February 1994

Abstract

A system of two parallel constrictions in a two-dimensional hole gas has been studied. At zero magnetic-field conductance quantization is observed through the individual constrictions. At high magnetic fields Aharonov-Bohm oscillations result from resonant tunneling through states encircling the repulsive potential between the constrictions. The oscillations demonstrate directly phase-coherent transport of holes.

Received 29 November 1993

DOI:https://doi.org/10.1103/PhysRevB.49.5101

Authors & Affiliations

I. Zailer, J. E. F. Frost, C. J. B. Ford, M. Pepper, M. Y. Simmons, D. A. Ritchie, J. T. Nicholls, and G. A. C. Jones

Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom

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Vol. 49, Iss. 7 — 15 February 1994

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