Semimetal-semiconductor transition in Bi1-xSbx alloy nanowires and their thermoelectric properties

被引：152

作者：

Lin, YM ^{[1
]}

Rabin, O

Cronin, SB

Ying, JY

Dresselhaus, MS

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[2] MIT, Dept Chem, Cambridge, MA 02139 USA

[3] MIT, Dept Phys, Cambridge, MA 02139 USA

[4] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 13期

关键词：

D O I：

10.1063/1.1503873

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The resistivity of Bi1-xSbx nanowire arrays exhibits complex variations as a function of Sb content x and temperature T due to the unique semimetal-to-semiconductor (SM-SC) transition experienced by the nanowires. Seebeck coefficient measurements show enhanced thermopower due to Sb alloying and the reduction in wire diameter. The theoretical model not only explains these transport measurements, but also suggests a useful technique to experimentally determine (i) whether the wire is semimetallic or semiconducting, (ii) the carrier concentration, and (iii) the conditions for the SM-SC transition. (C) 2002 American Institute of Physics.

引用

页码：2403 / 2405

页数：3

共 18 条

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