Tuning the inter-subband tunnelling and universal conductance fluctuations with an in-plane magnetic field in the 'quantum transport regime'

MJ Gompertz; Thomas Ihn; Alain Nogaret; pc main; L Eaves; M Henini; sp beaumont

doi:10.1006/spmi.1996.0330

Tuning the inter-subband tunnelling and universal conductance fluctuations with an in-plane magnetic field in the 'quantum transport regime'

MJ Gompertz, Thomas Ihn, Alain Nogaret, pc main, L Eaves, M Henini, sp beaumont

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Magnetotransport measurements are reported on mesoscopic wire samples containing tunnelling-coupled two-dimensional electron gases (2DEGs) confined on opposite sides of a single wide quantum well. An in-plane magnetic field ‘tunes’ the tunnelling between the 2DEGs and controls the number of occupied magnetoelectric subbands. It is found that in mesoscopic wires extra disorder quenches the resistance resonance observed in macroscopic Hall-bars. Universal conductance fluctuations are observed in a parallel magnetic field, reflecting the three-dimensional nature of electron trajectories, even in the limit of only one occupied subband.

Original language	English
Pages (from-to)	307-311
Number of pages	5
Journal	Superlattices and Microstructures
Volume	22
Issue number	3
DOIs	https://doi.org/10.1006/spmi.1996.0330
Publication status	Published - Oct 1997

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Tuning the inter-subband tunnelling and universal conductance fluctuations with an in-plane magnetic field in the 'quantum transport regime'. / Gompertz, MJ; Ihn, Thomas; Nogaret, Alain; main, pc; Eaves, L; Henini, M; beaumont, sp.

In: Superlattices and Microstructures, Vol. 22, No. 3, 10.1997, p. 307-311.

Research output: Contribution to journal › Article › peer-review

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AU - Ihn, Thomas

AU - Nogaret, Alain

AU - main, pc

AU - Eaves, L

AU - Henini, M

AU - beaumont, sp

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AB - Magnetotransport measurements are reported on mesoscopic wire samples containing tunnelling-coupled two-dimensional electron gases (2DEGs) confined on opposite sides of a single wide quantum well. An in-plane magnetic field ‘tunes’ the tunnelling between the 2DEGs and controls the number of occupied magnetoelectric subbands. It is found that in mesoscopic wires extra disorder quenches the resistance resonance observed in macroscopic Hall-bars. Universal conductance fluctuations are observed in a parallel magnetic field, reflecting the three-dimensional nature of electron trajectories, even in the limit of only one occupied subband.

U2 - 10.1006/spmi.1996.0330

DO - 10.1006/spmi.1996.0330

M3 - Article

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EP - 311

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