RESONANT MAGNETOCONDUCTANCE IN A 2-DIMENSIONAL LATERAL-SURFACE SUPERLATTICE

被引：16

作者：

TORIUMI, A ^{[1
]}

ISMAIL, K ^{[1
]}

BURKHARDT, M ^{[1
]}

ANTONIADIS, DA ^{[1
]}

SMITH, HI ^{[1
]}

机构：

[1] MIT,DEPT ELECT ENGN & COMP SCI,CAMBRIDGE,MA 02139

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.41.12346

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated magnetoconductance in a two-dimen- sional lateral-surface superlattice on modulation-doped GaAs/AlxGa1-xAs heterostructure, at 50 mK<T<1.5 K and 0<B<13.5 T. The superlattice potential modulation is formed and controlled by a metal grid gate with 200-nm periodicity. This modulation can be made larger than the Fermi energy and cyclotron energy depending on the grid-gate bias. Conductance oscillations as a function of gate bias in the presence of a magnetic field have been observed. The magnetic-field dependence of the amplitude and position of the oscillations indicates that the effect of the magnetic field is to sharpen the superlattice potential modulation. © 1990 The American Physical Society.

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页码：12346 / 12349

页数：4

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