OBSERVATION OF A BLOCH-GRUNEISEN REGIME IN 2-DIMENSIONAL ELECTRON-TRANSPORT

被引：144

作者：

STORMER, HL

PFEIFFER, LN

BALDWIN, KW

WEST, KW

机构：

[1] ATandT Bell Laboratories, Murray Hill

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.41.1278

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have observed a rapid decrease in the rate by which two-dimensional electrons in very high-mobility (107 cm2/V sec) GaAs-AlxGa1-xAs heterostructures are scattered by acoustic phonons as the temperature approaches T=0. This precipitous drop in scattering rate is caused by strong phase-space restrictions for electron-phonon scattering. The characteristic temperature for this transition is not the Debye temperature of the GaAs host material, but the temperature at which phonons of twice the Fermi wave vector cease to be thermally excited. © 1990 The American Physical Society.

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页码：1278 / 1281

页数：4

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