Strongly confined tunnel-coupled one-dimensional electron systems from an asymmetric double quantum well

S. S. Buchholz; S. F. Fischer; U. Kunze; D. Schuh; G. Abstreiter

doi:10.1016/j.physe.2007.09.038

Strongly confined tunnel-coupled one-dimensional electron systems from an asymmetric double quantum well

S. S. Buchholz
, S. F. Fischer
, U. Kunze
, D. Schuh
, G. Abstreiter

Max-Planck-lnstitut für Kohlenforschung
Walter Schottky Institut
University of Regensburg

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

3 Scopus citations

Abstract

Vertically stacked quantum point contacts (QPCs) are prepared by atomic force microscope (AFM) lithography from an asymmetric GaAs/AlGaAs double quantum well (DQW) heterostructure. Top- and back-gate voltages are used to tune the tunnel-coupled QPCs, and back-gate bias cooling is employed to investigate coupled and decoupled one-dimensional (1D) modes. Parity dependent mode coupling is invoked by the particular asymmetry in the vertical DQW confinement.

Original language	English
Pages (from-to)	1448-1450
Number of pages	3
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	40
Issue number	5
DOIs	https://doi.org/10.1016/j.physe.2007.09.038
State	Published - Mar 2008
Externally published	Yes

Keywords

Cooling bias
Double quantum well
Quantum point contact
Tunnel coupling
Wave function hybridization

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10.1016/j.physe.2007.09.038

Cite this

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abstract = "Vertically stacked quantum point contacts (QPCs) are prepared by atomic force microscope (AFM) lithography from an asymmetric GaAs/AlGaAs double quantum well (DQW) heterostructure. Top- and back-gate voltages are used to tune the tunnel-coupled QPCs, and back-gate bias cooling is employed to investigate coupled and decoupled one-dimensional (1D) modes. Parity dependent mode coupling is invoked by the particular asymmetry in the vertical DQW confinement.",

keywords = "Cooling bias, Double quantum well, Quantum point contact, Tunnel coupling, Wave function hybridization",

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year = "2008",

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T1 - Strongly confined tunnel-coupled one-dimensional electron systems from an asymmetric double quantum well

AU - Buchholz, S. S.

AU - Fischer, S. F.

AU - Kunze, U.

AU - Schuh, D.

AU - Abstreiter, G.

PY - 2008/3

Y1 - 2008/3

N2 - Vertically stacked quantum point contacts (QPCs) are prepared by atomic force microscope (AFM) lithography from an asymmetric GaAs/AlGaAs double quantum well (DQW) heterostructure. Top- and back-gate voltages are used to tune the tunnel-coupled QPCs, and back-gate bias cooling is employed to investigate coupled and decoupled one-dimensional (1D) modes. Parity dependent mode coupling is invoked by the particular asymmetry in the vertical DQW confinement.

AB - Vertically stacked quantum point contacts (QPCs) are prepared by atomic force microscope (AFM) lithography from an asymmetric GaAs/AlGaAs double quantum well (DQW) heterostructure. Top- and back-gate voltages are used to tune the tunnel-coupled QPCs, and back-gate bias cooling is employed to investigate coupled and decoupled one-dimensional (1D) modes. Parity dependent mode coupling is invoked by the particular asymmetry in the vertical DQW confinement.

KW - Cooling bias

KW - Double quantum well

KW - Quantum point contact

KW - Tunnel coupling

KW - Wave function hybridization

UR - https://www.scopus.com/pages/publications/39649084877

U2 - 10.1016/j.physe.2007.09.038

DO - 10.1016/j.physe.2007.09.038

M3 - Article

AN - SCOPUS:39649084877

SN - 1386-9477

VL - 40

SP - 1448

EP - 1450

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 5

ER -

Strongly confined tunnel-coupled one-dimensional electron systems from an asymmetric double quantum well

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Keywords

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