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Hole-hole interaction effect in the conductance of the two-dimensional hole gas in the ballistic regime

Proskuryakov, YY; Savchenko, AK; Safonov, SS; Pepper, M; Simmons, MY; Ritchie, DA; (2002) Hole-hole interaction effect in the conductance of the two-dimensional hole gas in the ballistic regime. PHYS REV LETT , 89 (7) , Article 076406. 10.1103/PhysRevLett.89.076406. Green open access

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Abstract

On a high-mobility two-dimensional hole gas (2DHG) in a GaAs/GaAlAs heterostructure we study the interaction correction to the Drude conductivity in the ballistic regime, k(B)Ttau/(h) over bar >1. It is shown that the "metallic" behavior of the resistivity (drho/dT>0) of the low-density 2DHG is caused by the hole-hole interaction effect in this regime. We find that the temperature dependence of the conductivity and the parallel-field magnetoresistance are in agreement with this description, and determine the Fermi-liquid interaction constant F-0(sigma) which controls the sign of drho/dT.

Type: Article
Title: Hole-hole interaction effect in the conductance of the two-dimensional hole gas in the ballistic regime
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.89.076406
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.89.076406
Language: English
Keywords: PARALLEL MAGNETIC-FIELD, ELECTRON-SYSTEM, ALXGA1-XAS/GAAS HETEROSTRUCTURES, INTERMEDIATE TEMPERATURES, 2-DIMENSIONAL HOLES, METALLIC BEHAVIOR, CONDUCTIVITY, SCATTERING, TRANSITION, MOBILITY
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1311594
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