Electron-electron interactions in the 2D electron system

被引：1

作者：

Knyazev, D. A. ^{[1
]}

Omelyanovskii, O. E. ^{[1
]}

Pudalov, V. M. ^{[1
]}

机构：

[1] PN Lebedev Phys Inst, Div Solid State Phys, Leninskii Prospekt 53, Moscow 119991, Russia

来源：

SOLID STATE COMMUNICATIONS | 2007年 / 144卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

insulators; metals; electron-electron interactions; phase transitions;

D O I：

10.1016/j.ssc.2007.03.059

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper, we report studies of the electron-electron interaction effects in 2D electron systems. The interaction manifests in renormalization of the effective spin susceptibility, effective mass, g*-factor, conductivity etc. By applying in-plane magnetic field, we tuned the effective interaction between the electrons and compared with theory the temperature dependence of the conductivity. We find a good agreement with interaction corrections calculated within the Fermi liquid theory. To address the question on the origin of the metal-insulator transition (MIT) in 213, we explored transport and magnetotransport properties in the vicinity of the MIT and compared our data with solutions of two equations of the renormalization group (RG) theory, which describes temperature evolutions of the resistivity and interaction parameters for 2D electron system. We found a good agreement between the rho(T, B-parallel to) data and the RG-theory in a wide range of the in-plane fields. These results support the Fermi liquid type origin of the metallic state and the interpretation of the observed 2D MIT as the true quantum phase transition. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：518 / 520

页数：3

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