Effects of disorder on the ground-state energy of a two-dimensional electron

被引:10
作者
Asgari, R [1 ]
Tanatar, B
机构
[1] Inst Studies Theoret Phys & Math, Tehran 193955531, Iran
[2] Bilkent Univ, Dept Phys, TR-06533 Ankara, Turkey
关键词
D O I
10.1103/PhysRevB.65.085311
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the effects of disorder scattering on the ground-state energy of a two-dimensional electron system. Considering charged impurity scattering within the mode-coupling approximation to the memory function formalism, we calculate the correlation effects using a self-consistent field approach. In a different model, we also treat the disorder effects phenomenologically. The exchange, correlation, and ground-state energies and the compressibility are calculated for both models. In terms of the compressibility both models have similar predictions in the high-density region. The mode-coupling theory results at lower density are in better qualitative agreement with the experimental findings.
引用
收藏
页码:1 / 6
页数:6
相关论文
共 29 条
[1]   Colloquium:: Metallic behavior and related phenomena in two dimensions [J].
Abrahams, E ;
Kravchenko, SV ;
Sarachik, MP .
REVIEWS OF MODERN PHYSICS, 2001, 73 (02) :251-266
[2]   SCALING THEORY OF LOCALIZATION - ABSENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS [J].
ABRAHAMS, E ;
ANDERSON, PW ;
LICCIARDELLO, DC ;
RAMAKRISHNAN, TV .
PHYSICAL REVIEW LETTERS, 1979, 42 (10) :673-676
[3]   ELECTRONIC-PROPERTIES OF TWO-DIMENSIONAL SYSTEMS [J].
ANDO, T ;
FOWLER, AB ;
STERN, F .
REVIEWS OF MODERN PHYSICS, 1982, 54 (02) :437-672
[4]   INTERACTION-DRIVEN METAL-INSULATOR TRANSITIONS IN DISORDERED FERMION SYSTEMS [J].
CASTELLANI, C ;
DICASTRO, C ;
LEE, PA ;
MA, M .
PHYSICAL REVIEW B, 1984, 30 (02) :527-543
[5]   Charged impurity-scattering-limited low-temperature resistivity of low-density silicon inversion layers [J].
Das Sarma, S ;
Hwang, EH .
PHYSICAL REVIEW LETTERS, 1999, 83 (01) :164-167
[6]   Thermodynamic signature of a two-dimensional metal-insulator transition [J].
Dultz, SC ;
Jiang, HW .
PHYSICAL REVIEW LETTERS, 2000, 84 (20) :4689-4692
[7]   WEAK LOCALIZATION AND COULOMB INTERACTION IN DISORDERED-SYSTEMS [J].
FINKELSTEIN, AM .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1984, 56 (03) :189-196
[8]   THE METAL-INSULATOR-TRANSITION IN TWO-DIMENSIONAL SYSTEMS WITH CHARGED IMPURITIES [J].
GOLD, A ;
GOTZE, W .
SOLID STATE COMMUNICATIONS, 1983, 47 (08) :627-629
[9]  
GOTZE W, 1978, SOLID STATE COMMUN, V27, P1393, DOI 10.1016/0038-1098(78)91579-X
[10]   Unexpected behavior of the local compressibility near the B=0 metal-insulator transition [J].
Ilani, S ;
Yacoby, A ;
Mahalu, D ;
Shtrikman, H .
PHYSICAL REVIEW LETTERS, 2000, 84 (14) :3133-3136