Dzyaloshinski-Moriya interaction in the 2D spin gap system SrCu2(BO3)2 -: art. no. 167205

被引：107

作者：

Cépas, O

Kakurai, K

Regnault, LP

Ziman, T

Boucher, JP

Aso, N

Nishi, M

Kageyama, H

Ueda, Y

机构：

[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[2] Univ Tokyo, ISSP, Neutron Scattering Lab, Tokai, Ibaraki 3191106, Japan

[3] CEA, Lab Magnetisme & Diffract Neutron, DRFMC SPSMS, F-38054 Grenoble 09, France

[4] Univ Grenoble 1, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France

[5] Univ Tokyo, IRSP, Mat Design & Characterizat Lab, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.87.167205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Dzyaloshinski-Moriya interaction partially lifts the magnetic frustration of the spin-1/2 oxide SrCu2(BO3)(2). It explains the fine structure of the excited triplet state and its unusual magnetic field dependence, as observed in previous ESR and new neutron inelastic scattering experiments, We claim that it is mainly responsible for the dispersion. We propose also a new mechanism for the observed ESR transitions forbidden by standard selection rules, which relies on an instantaneous Dzyaloshinski-Moriya interaction induced by spin-phonon couplings.

引用

页数：4

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