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Applied Physics Letters / Volume 89 / Issue 9 / ELECTRONIC TRANSPORT AND SEMICONDUCTORS

Appl. Phys. Lett. 89, 092105 (2006); http://dx.doi.org/10.1063/1.2337525 (3 pages)

Ballistic transport in induced one-dimensional hole systems

O. Klochan1, W. R. Clarke1, R. Danneau1, A. P. Micolich1, L. H. Ho1, A. R. Hamilton1, K. Muraki2, and Y. Hirayama2

1School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia
2NTT Basic Research Laboratory, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan

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(Received 8 May 2006; accepted 28 June 2006; published online 29 August 2006)

The authors have fabricated and studied a ballistic one-dimensional p-type quantum wire using an undoped AlGaAs/GaAs heterostructure. The absence of modulation doping eliminates remote ionized impurity scattering and allows high mobilities to be achieved over a wide range of hole densities and, in particular, at very low densities where carrier-carrier interactions are strongest. The device exhibits clear quantized conductance plateaus with highly stable gate characteristics. These devices provide opportunities for studying spin-orbit coupling and interaction effects in mesoscopic hole systems in the strong interaction regime where rs>10.

© 2006 American Institute of Physics

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KEYWORDS and PACS

Keywords

aluminium compounds, gallium arsenide, III-V semiconductors, semiconductor heterojunctions, semiconductor quantum wires, semiconductor doping, impurity scattering, hole density, hole mobility, ballistic transport, mesoscopic systems, spin-orbit interactions

PACS

  • 73.23.Ad

    Ballistic transport

  • 73.63.Nm

    Quantum wires

  • 72.10.Fk

    Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect)

  • 72.20.Fr

    Low-field transport and mobility; piezoresistance

  • 71.70.Ej

    Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2337525

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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