A nonlinear transport device with no intrinsic threshold

被引：19

作者：

Song, AM

Manus, S

Streibl, M

Lorke, A

Kotthaus, JP

Wegscheider, W

Bichler, M

机构：

[1] Univ Munich, Ctr NanoSci, D-80539 Munich, Germany

[2] Univ Munich, Sekt Phys, D-80539 Munich, Germany

[3] TUM, Walter Schottky Inst, D-85748 Garching, Germany

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1999年 / 25卷 / 1-2期

关键词：

nonlinearity; ballistic transport; rectification; threshold;

D O I：

10.1006/spmi.1998.0646

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A ballistic rectifier, based on guidance of carriers by a triangular antidot, is shown to be both experimentally and theoretically capable of operating for weak signals. At T = 4.2 K, we find that the ballistic rectifier works when the input voltage is as low as 0.5 mV, the same order of k(B)T. Based on an extended Landauer-Buttiker formula for nonlinear transport, we show that even when the input signal is much smaller than k(B)T, temperature has no obvious influence on the rectification effect. (C) 1999 Academic Press.

引用

收藏

页码：269 / 272

页数：4

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