PHONON-SCATTERING FROM FERROELECTRIC DOMAIN-WALLS - PHONON IMAGING IN KDP

被引：39

作者：

WEILERT, MA ^{[1
]}

MSALL, ME ^{[1
]}

ANDERSON, AC ^{[1
]}

WOLFE, JP ^{[1
]}

机构：

[1] UNIV ILLINOIS,RES RES LAB,URBANA,IL 61801

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.71.735

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ferroelectric domain wall is an ideal interface for studies of the boundary scattering of high frequency acoustic phonons. These internal interfaces have no contamination and can be reversibly created and destroyed by application of an electric field at the phase transition- 122 K in KDP. Images of phonons in single- and multiple-domain cases show remarkable differences in the ballistic heat flux. Theoretical modeling based on acoustic wave reflection reveals that the domain walls act as nearly perfect grain boundaries.

引用

页码：735 / 738

页数：4

共 18 条

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