Current-driven phase oscillation and domain-wall propagation in WxV1-xO2 nanobeams

被引：134

作者：

Gu, Qian

Falk, Abram

Wu, Junqiao

Lian Ouyang

Park, Hongkun

机构：

[1] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA

[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

NANO LETTERS | 2007年 / 7卷 / 02期

关键词：

D O I：

10.1021/nl0624768

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the observation of a current-driven metal (M)-insulator (I) phase oscillation in two-terminal devices incorporating individual WxV1-xO2 nanobeams connected to parallel shunt capacitors. The frequency of the phase oscillation reaches above 5 MHz for similar to 1 mu m long devices. The M-I phase oscillation, which coincides with the charging/discharging of the capacitor, occurs through the axial drift of a single M-I domain wall driven by Joule heating and the Peltier effect.

引用

页码：363 / 366

页数：4

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