ZERO-DIMENSIONAL STATES IN MACROSCOPIC RESONANT-TUNNELING DEVICES

被引：33

作者：

SAKAI, JW

MAIN, PC

BETON, PH

LASCALA, N

GEIM, AK

EAVES, L

HENINI, M

机构：

[1] Department of Physics, University of Nottingham, Nottingham

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 19期

关键词：

D O I：

10.1063/1.111574

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate that it is possible to observe transport through individual tunneling channels due to zero-dimensional states in large area resonant tunneling devices (RTD). These localized states are found to be related to the presence of donor impurities in the vicinity of the quantum well but their binding energies are larger than that due to a single isolated hydrogenic donor. The states give rise to additional peaks in current voltage below the threshold for the main resonant peak. These peaks are visible in RTD with essentially any lateral dimension provided the current is measured with sufficient sensitivity.

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页码：2563 / 2565

页数：3

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