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 journalArticle

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 languageEnglish
Pages (from-to)307-311
Number of pages5
JournalSuperlattices and Microstructures
Volume22
Issue number3
DOIs
Publication statusPublished - Oct 1997

Fingerprint

Two dimensional electron gas
Tuning
tuning
wire
Magnetic fields
electron trajectories
magnetic fields
Wire
electron gas
Galvanomagnetic effects
quantum wells
disorders
Semiconductor quantum wells
Trajectories
Electrons

Cite this

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 journalArticle

@article{e57361fe319541ec8198f6d3f1d87f3d,
title = "Tuning the inter-subband tunnelling and universal conductance fluctuations with an in-plane magnetic field in the 'quantum transport regime'",
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.",
author = "MJ Gompertz and Thomas Ihn and Alain Nogaret and pc main and L Eaves and M Henini and sp beaumont",
year = "1997",
month = "10",
doi = "10.1006/spmi.1996.0330",
language = "English",
volume = "22",
pages = "307--311",
journal = "Superlattices and Microstructures",
issn = "0749-6036",
publisher = "Elsevier Academic Press Inc",
number = "3",

}

TY - JOUR

T1 - Tuning the inter-subband tunnelling and universal conductance fluctuations with an in-plane magnetic field in the 'quantum transport regime'

AU - Gompertz, MJ

AU - Ihn, Thomas

AU - Nogaret, Alain

AU - main, pc

AU - Eaves, L

AU - Henini, M

AU - beaumont, sp

PY - 1997/10

Y1 - 1997/10

N2 - 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.

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

VL - 22

SP - 307

EP - 311

JO - Superlattices and Microstructures

JF - Superlattices and Microstructures

SN - 0749-6036

IS - 3

ER -