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.
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页数：4
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