HYDRODYNAMIC TRANSPORT OF EXCITONS IN SEMICONDUCTORS AND BOSE-EINSTEIN CONDENSATION

被引：32

作者：

LINK, B ^{[1
]}

BAYM, G ^{[1
]}

机构：

[1] UNIV ILLINOIS,LOOMIS LAB PHYS,URBANA,IL 61801

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.69.2959

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the expansion of an exciton gas against lattice drag, describe the transition between the diffusive and low-drag hydrodynamic regimes, and compare with experimental data obtained at exciton densities and temperatures near the Bose-Einstein phase boundary. As we show through numerical simulation, the rapid expansion of the exciton cloud seen experimentally at high exciton densities can be explained as drag-free hydrodynamic flow. Such a reduction in drag strongly suggests that Bose-Einstein condensation has occurred and that excitonic superfluidity is being observed.

引用

页码：2959 / 2962

页数：4

共 14 条

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