Three-phonon coupled excitations in an antiferromagnet

被引：8

作者：

Preobrazhenskii, V. L. ^{[1
]}

Rudenko, V. V.

Pernod, P.

Ozhogin, V. I.

机构：

[1] Ecole Cent Lille, Inst Elect Microelect, Joint European Lab, Lille, France

[2] Russian Acad Sci, Prokhorov Inst Gen Phys, Moscow 119991, Russia

[3] Vernadskii Tavrichesku Natl Univ, Simferopol, Ukraine

[4] Kurchatov Inst, Russian Res Ctr, Moscow 123182, Russia

来源：

JETP LETTERS | 2007年 / 86卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

63; 20; Ls; 75; 50; Ee;

D O I：

10.1134/S0021364007170158

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Results of an experimental observation of the generation of three-phonon coupled excitations in an alpha-Fe2O3 high-temperature antiferromagnet in a transverse electromagnetic pumping field are presented. The underthreshold and superthreshold generation regimes are studied depending on the phase shift of pumping with respect to the phase of the three-phonon acoustic field correlator. The results agree well with the theory of the resonant nonlinear interaction of quasi-phonons with an electromagnetic field.

引用

页码：348 / 351

页数：4

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