Crystal symmetry and high-magnetic-field specific heat of SrCU2(BO3)2 -: art. no. 092403

被引：31

作者：

Jorge, GA

Stern, R

Jaime, M

Harrison, N

Bonca, J

El Shawish, S

Batista, CD

Dabkowska, HA

Gaulin, BD

机构：

[1] Los Alamos Natl Lab, MST NHMFL, Los Alamos, NM 87545 USA

[2] NICPB, Tallinn, Estonia

[3] FMF Univ Ljubljana, Dept Phys, Ljubljana 1000, Slovenia

[4] Jozef Stefan Inst, Ljubljana 1000, Slovenia

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

[6] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4C6, Canada

[7] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.71.092403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements of the specific heat of them quantum spin liquid system SrCu2(BO3)(2) in continuous magnetic fields H of up to 33 T. The specific heat data, when combined with a finite temperature Lanczos diagonalization of the Shastry-Sutherland Hamiltonian, indicate the presence of a nearest neighbor Dzyaloshinsky-Moriya (DM) interaction that violates the crystal symmetry. Moreover, the same DM interaction is required to explain the observed electron spin resonance lines for H vertical bar vertical bar c.

引用

页数：4

共 29 条

[1] Theory of phonon-assisted forbidden optical transitions in spin-gap systems -: art. no. 024404 [J].