Quantum conductivity corrections in free-standing and supported n+ GaAs wires
Quantum conductivity corrections in free-standing and supported n+ GaAs wires
Low temperature electrical and magnetoresistance measurements have been performed on free-standing and supported wires of n-type GaAs doped to 1017 / cm3 over the temperature range 0.47 - 4.2 K. These wires were triangular in cross-section, with widths of 600 - 900 nm and lengths of 3.2 -10 µm. We report that the observed increase in the resistance for temperatures below 4.2 K can be interpreted as being due to a combination of weak localisation and 3D electron-electron interaction effects. We will also show how the results described here can be used as the basis for a determination of the phonon conductivity and dimensionality in free-standing structures.
1807-1815
Potts, A
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Hasko, D G
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Cleaver, J R A
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Smith, C G
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Ahmed, H
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Kelly, M J
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Frost, J E F
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Jones, G A C
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Peacock, D C
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Ritchie, D A
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February 1990
Potts, A
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Hasko, D G
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Cleaver, J R A
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Smith, C G
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Ahmed, H
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Kelly, M J
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Frost, J E F
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Jones, G A C
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Peacock, D C
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Ritchie, D A
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Potts, A, Hasko, D G, Cleaver, J R A, Smith, C G, Ahmed, H, Kelly, M J, Frost, J E F, Jones, G A C, Peacock, D C and Ritchie, D A
(1990)
Quantum conductivity corrections in free-standing and supported n+ GaAs wires.
Journal of Physics: Condensed Matter, 2 (7), .
Abstract
Low temperature electrical and magnetoresistance measurements have been performed on free-standing and supported wires of n-type GaAs doped to 1017 / cm3 over the temperature range 0.47 - 4.2 K. These wires were triangular in cross-section, with widths of 600 - 900 nm and lengths of 3.2 -10 µm. We report that the observed increase in the resistance for temperatures below 4.2 K can be interpreted as being due to a combination of weak localisation and 3D electron-electron interaction effects. We will also show how the results described here can be used as the basis for a determination of the phonon conductivity and dimensionality in free-standing structures.
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Published date: February 1990
Organisations:
Nanoelectronics and Nanotechnology
Identifiers
Local EPrints ID: 252880
URI: http://eprints.soton.ac.uk/id/eprint/252880
ISSN: 0953-8984
PURE UUID: ebc50b2c-08e3-4706-a7cb-d712b02a0911
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Date deposited: 30 Mar 2000
Last modified: 10 Dec 2021 20:30
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Contributors
Author:
A Potts
Author:
D G Hasko
Author:
J R A Cleaver
Author:
C G Smith
Author:
H Ahmed
Author:
M J Kelly
Author:
J E F Frost
Author:
G A C Jones
Author:
D C Peacock
Author:
D A Ritchie
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