Local off-centering symmetry breaking in the high-temperature regime of SnTe

被引：88

作者：

Knox, K. R. ^{[1
]}

Bozin, E. S. ^{[1
]}

Malliakas, C. D. ^{[2
,3
]}

Kanatzidis, M. G. ^{[2
,3
]}

Billinge, S. J. L. ^{[1
,4
]}

机构：

[1] Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA

[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[3] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[4] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 01期

关键词：

STRUCTURAL PHASE-TRANSITIONS; MOSSBAUER-SPECTROSCOPY; LEAD CHALCOGENIDES; CRYSTAL-STRUCTURE; PHONON MODE; PBTE; SCATTERING; DISORDER; ORDER; MONOCHALCOGENIDES;

D O I：

10.1103/PhysRevB.89.014102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The local structure of SnTe has been studied using atomic pair distribution function analysis of x-ray and neutron data. Evidence is found for a locally distorted high-temperature state, which emerges on warming from an undistorted rocksalt structure. The structural distortion appears rapidly over a relatively narrow temperature range from 300 to 400 K. A similar effect has been reported in PbTe and PbS and dubbed emphanisis; here we report on emphanisis in a compound that does not contain Pb. The analysis suggests that this effect is unrelated to the low-temperature ferroelectric state in SnTe.

引用

页数：5

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