Pair formation temperature in jelliumlike two-dimensional electron gases

被引：0

作者：

Nagy, I. ^{[1
,2
]}

Zabala, N. ^{[2
,3
,4
]}

Echenique, P. M. ^{[2
,4
,5
]}

机构：

[1] Tech Univ Budapest, Inst Phys, Dept Theoret Phys, H-1521 Budapest, Hungary

[2] DIPC, San Sebastian 20018, Spain

[3] UPV, EHU, Zientzia Eta Teknol Fak, Bilbao 48080, Spain

[4] UPV, EHU, CSIC, Ctr Mixto,CFM, San Sebastian 20018, Spain

[5] Univ Basque Country, Fac Quim, Dept Fis Mat, EHU, San Sebastian 20018, Spain

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 09期

关键词：

Bethe-Salpeter equation; jellium; two-dimensional electron gas; FERMI-LIQUID; SUPERCONDUCTORS; PSEUDOGAP; SYSTEMS;

D O I：

10.1103/PhysRevB.80.092504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A standard many-body method, based on the spherical-harmonics representation of the Bethe-Salpeter ladder solution for the two-particle scattering amplitude in two-dimensional jellium electron gases, is applied to determine a pair formation temperature T-p from the pole of the pairing vertex. In this method, pairing may occur due to attractive spherical harmonics in the input interparticle interaction. The comparative study was performed with parametrized models for this interaction obtained by considering the real-space aspects of screening holes around moving electrons. The theoretical, maximal pair formation temperatures are in the similar to 100 K range and appear at small values of the density of the jellium system.

引用

页数：3

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