On the isotope effect in thermal conductivity of silicon

被引：103

作者：

Inyushkin, AV ^{[1
]}

Taldenkov, AN ^{[1
]}

Gibin, AM ^{[1
]}

Gusev, AV ^{[1
]}

Pohl, HJ ^{[1
]}

机构：

[1] Russian Acad Sci, Kurchatov Inst, Inst Mol Phys, Moscow 123182, Russia

来源：

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL. 1, NO. 11 | 2004年 / 1卷 / 11期

关键词：

D O I：

10.1002/pssc.200405341

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The thermal conductivity kappa(T) of single crystals of silicon with two different isotopic compositions: natural and 99.983% enriched Si-28, was investigated in the temperature range from 0.5 K to 300 K. The enriched 28Si sample has very high thermal conductivity maximum of 290 W cm(-1)K(-1) at T-max = 26.5 K, about 7.5 times higher relative to the conductivity of Si-nat with natural isotope abundance. The isotope effect decreases with temperature increase, being 10 +/- 2% at room temperature. The data are discussed briefly within the Ambegaocar's theory of isotope effect. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：2995 / 2998

页数：4

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