Multiphoton-assisted tunneling, dynamic localization and absolute negative conductance

被引：1
|
作者：
Keay, BJ
Allen, SJ
Maranowski, KD
Gossard, AC
Bhattacharya, U
Rodwell, MJW
机构：
[1] UNIV CALIF SANTA BARBARA, DEPT MAT, SANTA BARBARA, CA 93106 USA
[2] UNIV CALIF SANTA BARBARA, DEPT ELECT & COMP ENGN, SANTA BARBARA, CA 93106 USA
来源：
SURFACE SCIENCE | 1996年 / 361卷 / 1-3期
基金：
美国国家科学基金会;
关键词：
photon emission; quantum effects; superlattices; tunneling;
D O I：
10.1016/0039-6028(96)00370-6
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 report the observation of Absolute Negative Conductance (ANC), multiphoton stimulated emission and dynamical localization in sequential resonant tunneling semiconductor superlattices driven by intense terahertz electric fields. With increasing terahertz field strength the conductance neat zero dc bias decreases towards zero and then becomes negative. This is accompanied by new steps and plateaus that are attributed ia multiphoton-assisted resonant tunneling between ground states of neighboring quantum wells accompanied by the stimulated emission of a photon.
引用
收藏
页码：176 / 180
页数：5
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