INFLUENCE OF SCATTERING ON THE FORMATION OF WANNIER-STARK LADDERS AND BLOCK OSCILLATIONS IN SEMICONDUCTOR SUPERLATTICES

被引：39

作者：

VONPLESSEN, G ^{[1
]}

MEIER, T ^{[1
]}

FELDMANN, J ^{[1
]}

GOBEL, EO ^{[1
]}

THOMAS, P ^{[1
]}

GOOSSEN, KW ^{[1
]}

KUO, JM ^{[1
]}

KOPF, RF ^{[1
]}

机构：

[1] PHILIPPS UNIV,CTR MAT SCI,D-35032 MARBURG,GERMANY

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.49.14058

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the critical field for the formation of Wannier-Stark ladders and Bloch oscillations in GaAs/AlxGa1-xAs superlattices at low temperatures. From the results of photocurrent and transient four-wave mixing experiments, we conclude that the critical field is higher for superlattices with wide minibands than for superlattices, with narrow minibands. The explanation for this dependence is that intraminiband scattering due to LO-phonon emission is excluded in minibands narrower than the LO-phonon energy.

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页码：14058 / 14061

页数：4

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