DIRECT OBSERVATION OF QUASI-BOUND STATES AND BAND-STRUCTURE EFFECTS IN A DOUBLE-BARRIER RESONANT-TUNNELING STRUCTURE USING BALLISTIC-ELECTRON-EMISSION MICROSCOPY

被引：79

作者：

SAJOTO, T ^{[1
]}

OSHEA, JJ ^{[1
]}

BHARGAVA, S ^{[1
]}

LEONARD, D ^{[1
]}

CHIN, MA ^{[1
]}

NARAYANAMURTI, V ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.74.3427

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ballistic electron emission microscopy (BEEM) has been used to study transport in a double barrier resonant tunneling structure. Unlike conventional transport techniques, BEEM allows the injected electron energy to be varied independent of the band profile. We report the observation of quasi-bound states and band-structure effects as deduced from the temperature evolution of the BEEM spectra. The BEEM thresholds are found to be in good agreement with the calculated energetically favorable levels. Our results show that BEEM is a powerful spectroscopic tool for studying quantum structures. © 1995 The American Physical Society.

引用

页码：3427 / 3430

页数：4

共 19 条

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