Low-temperature decoherence in disordered Pt nanowires

被引：12

作者：

Lin, JF

Bird, JP ^{[1
]}

Rotkina, L

机构：

[1] Arizona State Univ, Dept Elect Engn, Nanostruct Res Grp, Tempe, AZ 85287 USA

[2] Univ Illinois, Beckman Inst Adv Sci & Technol, Urbana, IL 61801 USA

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2003年 / 19卷 / 1-2期

关键词：

decoherence; nanowires;

D O I：

10.1016/S1386-9477(03)00317-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We study the electrical properties of Pt nanowires, formed on SiO2 substrates by focused-ion-beam deposition. Their magneto-resistance shows evidence for weak-antilocalization at temperatures below 10 K, with a phase-breaking length of similar to 100 nm, and a temperature dependence suggestive of quasi-one-dimensional interference. Studies of their temperature-dependent resistance at low temperatures reveal a significant contribution due to electron-electron interaction as well as weak anti-localization. A switching behavior in the temporal resistance signals suggests two metastable states exist in local lattice configurations of the systems, which might be the source of saturation of phase-breaking length at low temperatures. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：112 / 116

页数：5

共 12 条

[1]

Altshuler B., 1987, SOV SCI REV A, V9, P223

[2]

Altshuler B. L., 1985, Electron-electron interactions in disordered systems, P1

[3] EFFECTS OF ELECTRON-ELECTRON COLLISIONS WITH SMALL ENERGY TRANSFERS ON QUANTUM LOCALIZATION [J].