FAR-INFRARED PHOTOCURRENT OF QUANTUM WIRES

被引：12

作者：

DREXLER, H ^{[1
]}

HANSEN, W ^{[1
]}

KOTTHAUS, JP ^{[1
]}

HOLLAND, M ^{[1
]}

BEAUMONT, SP ^{[1
]}

机构：

[1] UNIV GLASGOW,DEPT ELECTR & ELECT ENGN,GLASGOW G12 8QQ,SCOTLAND

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 17期

关键词：

D O I：

10.1063/1.111983

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study the photocurrent of quantum capacitor devices consisting of an electron wire array induced in an undoped AlAs/GaAs heterojunction with an interdigitated gate electrode. The photocurrent measures the collective one-dimensional intersubband resonance in the electron wires. The new technique to measure fundamental excitations of nanostructured electron systems yields strong signals even at very low electron densities so that only a single one-dimensional subband is occupied. Compared to previous far-infrared transmission studies the length and the number of the wires averaged in out technique is substantially smaller. The intersubband resonance in our devices is tunable in a wide range of energies up to 10.5 meV.

引用

页码：2270 / 2272

页数：3

共 12 条

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[4]

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