Disorder effect on the spin susceptibility of the two-dimensional one-valley electron gas

被引：1
|
作者：
De Palo, S. [1 ,2 ]
Moroni, S. [1 ,3 ]
Senatore, G. [1 ,2 ]
机构：
[1] INFM DEMOCRITOS Natl Simulat Ctr, Trieste, Italy
[2] Univ Trieste, Dipartimento Fis Teor, I-34014 Trieste, Italy
[3] Scuola Int Super Studi Avanzati, SISSA, I-34014 Trieste, Italy
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2009年 / 42卷 / 21期
关键词：
SYSTEMS;
D O I：
10.1088/1751-8113/42/21/214013
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Starting from the quantum Monte Carlo (QMC) prediction for the ground-state energy of a clean two-dimensional one-valley (2D1V) electron gas, we estimate the energy correction due to scattering sources present in actual devices such as AlAs quantum wells and GaAs heterostructures. We find that the effect of uncorrelated disorder, in the lowest (second) order in perturbation theory, is to enhance the spin susceptibility leading to its eventual divergence. In the density region where the Born approximation is able to reproduce the experimental mobility, the prediction for the spin susceptibility yielded by perturbation theory is in very good agreement with the available experimental evidence.
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页数：8
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