ANHARMONIC PERIODIC MODULATION IN LATERAL SURFACE SUPERLATTICES

被引：23

作者：

CUSCO, R ^{[1
]}

HOLLAND, MC ^{[1
]}

DAVIES, JH ^{[1
]}

LARKIN, IA ^{[1
]}

SKURAS, E ^{[1
]}

LONG, AR ^{[1
]}

BEAUMONT, SP ^{[1
]}

机构：

[1] UNIV GLASGOW,DEPT ELECTR & ELECT ENGN,NANOELECTR RES CTR,GLASGOW G12 8QQ,SCOTLAND

来源：

SURFACE SCIENCE | 1994年 / 305卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(94)90970-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have measured the longitudinal magnetoresistance of a lateral surface superlattice with a period of 270 nm where the electrons are only 28 nm deep. The commensurability oscillations have a strong second harmonic content. This reflects a non-sinusoidal potential in the two-dimensional electron gas, a consequence of the shallow structure. The shape of the potential cannot be explained by a pinned GaAs surface and indicates that the surface charge is frozen or that the electrons feel an elastic strain field from the metal gates.

引用

页码：643 / 647

页数：5

共 10 条

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