Nonlinear response of a clean one-dimensional wire

被引：48

作者：

de Picciotto, R ^{[1
]}

Pfeiffer, LN ^{[1
]}

Baldwin, KW ^{[1
]}

West, KW ^{[1
]}

机构：

[1] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.92.036805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study nonlinear transport in a clean one-dimensional wire fabricated by cleaved edge overgrowth in molecular beam epitaxy. At low electron densities, and with a large applied bias, we observe a feature in the differential conductance similar to the so-called "0.7 structure," found in quantum point contact devices. Using a simple model we suggest a link between this phenomenon, charge neutrality, and unidirectional dynamics in the wire.

引用

页数：4

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