Electron spin resonance of SrCu2(BO3)2 at high magnetic fields -: art. no. 014413

被引：9

作者：

El Shawish, S ^{[1
]}

Bonca, J

Batista, CD

Sega, I

机构：

[1] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia

[2] Univ Ljubljana, Fac Math & Phys, SI-1000 Ljubljana, Slovenia

[3] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.71.014413

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We calculate the electron spin resonance (ESR) spectra of the quasi-two-dimensional dimer spin liquid SrCu2(BO3)(2) as a function of magnetic field B. Using the standard Lanczos method, we solve a Shastry-Sutherland Hamiltonian with additional Dzyaloshinsky-Moriya (DM) terms which are crucial to explain different qualitative aspects of the ESR spectra. In particular, a nearest-neighbor DM interaction with a nonzero D-z component is required to explain the low frequency ESR lines for Bparallel toc. This suggests that crystal symmetry is lowered at low temperatures due to a structural phase transition.

引用

页数：5

共 18 条

[1]

Cépas O, 2002, PROG THEOR PHYS SUPP, P43, DOI 10.1143/PTPS.145.43

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