Interaction effects on magneto-oscillations in a two-dimensional electron gas - art. no. 045426
Interaction effects on magneto-oscillations in a two-dimensional electron gas - art. no. 045426
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DOI：
10.1103/physrevb.73.045426
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发表时间：
2006-01-01
影响因子：
3.7
通讯作者：
Mirlin, AD
中科院分区：
文献类型：
--
作者：
Adamov, Y;Gornyi, IV;Mirlin, AD
受最近实验的启发，我们研究了相互作用对二维电子气（2DEG）中磁振荡阻尼的修正。我们确定的相互作用引起的阻尼引起的有效质量和量子散射时间的校正的主要贡献。阻尼因子计算库仑和短程相互作用在整个温度范围内，从弹道扩散制度。结果表明，主要的影响是由于相互作用和杂质散射的相互作用的有效电子质量的重整化。结果是相关的磁振荡实验的分析（特别是，提取的有效质量的值），并预计将是有用的理解物理的高迁移率2DEG附近的明显的金属-绝缘体过渡。
Motivated by recent experiments, we study the interaction corrections to the damping of magneto-oscillations in a two-dimensional electron gas (2DEG). We identify leading contributions to the interaction-induced damping which are induced by corrections to the effective mass and quantum scattering time. The damping factor is calculated for Coulomb and short-range interaction in the whole range of temperatures, from the ballistic to the diffusive regime. It is shown that the dominant effect is that of the renormalization of the effective electron mass due to the interplay of the interaction and impurity scattering. The results are relevant to the analysis of experiments on magneto-oscillations (in particular, for extracting the value of the effective mass) and are expected to be useful for understanding the physics of a high-mobility 2DEG near the apparent metal-insulator transition.