SUPERLATTICE TRANSPORT IN INTENSE TERAHERTZ ELECTRIC-FIELDS

被引：6

作者：

KEAY, BJ

GUIMARAES, PSS

KAMINSKI, JP

ALLEN, SJ

HOPKINS, PF

GOSSARD, AC

FLOREZ, LT

HARBISON, JP

机构：

[1] UNIV CALIF SANTA BARBARA, DEPT MAT, SANTA BARBARA, CA 93106 USA

[2] UCSB, DEPT PHYS, INST QUANTUM, SANTA BARBARA, CA 93106 USA

[3] BELLCORE, RED BANK, NJ 07701 USA

来源：

SURFACE SCIENCE | 1994年 / 305卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0039-6028(94)90921-0

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：

The low DC field conductance and the nonlinear I-V characteristics of GaAs/Al0.70Ga0.30As superlattices have been measured in the presence of intense electric fields produced by UCSB's free-electron lasers. The DC conductance exhibits oscillatory behavior as a function of terahertz field strength that resembles the zeroth-order Bessel function, J0(edE(AC)/HomegaBAR), where e, d, and E(AC) are the electron charge, superlattice period and AC field strength, respectively. The I-V characteristics, measured between 600 GHz and 3.1 THz, display new steps and plateaus. The dependence of the new structure of frequency suggests the presence of new conduction channels that are most naturally assigned to photon-mediated sequential tunneling.

引用

页码：385 / 388

页数：4

共 13 条

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BASS FG, 1986, PHYS REP, V140, P37

[2]

BUTTIKER M, 1990, NATO ADV SCI I B-PHY, V231, P297

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