Superfluidity of "dirty" excitons

被引：12

作者：

Lozovik, YE ^{[1
]}

Berman, OL ^{[1
]}

Ruvinskii, AM ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Spect, Troitsk 142092, Moscow Region, Russia

来源：

JETP LETTERS | 1999年 / 69卷 / 08期

关键词：

D O I：

10.1134/1.567969

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of a random field due to impurities, boundary irregularities, and so on, on the superfluidity of a three-dimensional system of excitons and a quasi-two-dimensional system of direct or spatially indirect excitons is studied. The influence of a random field on the density of the superfluid component in the indicated excitonic systems at low temperatures T is investigated. The interaction between excitons is taken into account in the ladder approximation. For quasi-two-dimensional excitonic systems in a random field the Kosterlitz-Thouless temperature in the superfluid state is calculated. (C) 1999 American Institute of Physics. [S0021-3640(99)00908-1].

引用

页码：616 / 622

页数：7

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