COEXISTENCE OF WANNIER-STARK LOCALIZATION AND NEGATIVE DIFFERENTIAL VELOCITY IN SUPERLATTICES

被引：35
|
作者：
SIBILLE, A [1 ]
PALMIER, JF [1 ]
MOLLOT, F [1 ]
机构：
[1] CNRS,L2M,F-92220 BAGNEUX,FRANCE
来源：
APPLIED PHYSICS LETTERS | 1992年 / 60卷 / 04期
关键词：
D O I：
10.1063/1.106633
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We show the coexistence of Wannier-Stark localization as monitored by photoconduction experiments, and of negative differential velocity (NDV) for electrons in a perpendicularly biased GaAs/AlAs superlattice. The critical electric field for the onset of NDV, and that for the appearance of localization as monitored optically are nearly the same, which exemplifies the fundamental link between Wannier-Stark quantization [Phys. Rev. 117, 432 (1960)], and Esaki-Tsu nonlinear transport [IBM J. Res. Dev. 14, 61 (1970)].
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页码：457 / 459
页数：3
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