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Hole-Hole Interaction Effect in the Conductance of the Two-Dimensional Hole Gas in the Ballistic Regime | | Y.Y. Proskuryakov
; A.K. Savchenko
; S.S. Safonov
; M. Pepper
; M.Y. Simmons
; D.A. Ritchie
; | | Date: |
14 Sep 2001 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Disordered Systems and Neural Networks | cond-mat.mes-hall cond-mat.dis-nn | | Affiliation: | School of Physics, University of Exeter, U.K.; Cavendish Laboratory, University of Cambridge, U.K. | | 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_BT au /hbar $ $>1$. It is shown that the ’metallic’ behaviour of the resistivity ($d
ho /dT>0$) of the low-density 2DHG is caused by 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 $d
ho /dT$. | | Source: | arXiv, cond-mat/0109261 | | Services: | Forum | Review | PDF | Favorites | |
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