Cu(H2O)2(C2H8N2)SO4:: A quasi-two-dimensional S=1/2 Heisenberg antiferromagnet -: art. no. 014435

被引：28

作者：

Kajnaková, M

Orendác, M

Orendácová, A

Vlcek, A

Cernák, J

Kravchyna, OV

Anders, AG

Balanda, M

Park, JH

Feher, A

Meisel, MW

机构：

[1] Safarik Univ, Fac Sci, Ctr Low Temp Phys, Kosice 04154, Slovakia

[2] Ukrainian Acad Sci, Inst Low Temp Phys & Engn, UA-310164 Kharkov, Ukraine

[3] Polish Acad Sci, Inst Nucl Phys, PL-31142 Krakow, Poland

[4] Univ Florida, Dept Phys, Gainesville, FL 32611 USA

[5] Univ Florida, Ctr Condensed Matter Sci, Gainesville, FL 32611 USA

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.71.014435

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The experimental results of the susceptibility, specific heat, magnetization, and electron spin resonance of Cu(H2O)(2)(C2H8N2)SO4 are reported. Despite the triangular arrangement of chemical bonds, the system is identified as an S=1/2 Heisenberg antiferromagnet where the dominant exchange coupling J/k(B)approximate to-1.4 K is mediated by a square network of hydrogen bonds. The long-range ordering observed at T-N=0.91 K is proposed to be Neel type. The possibility of tuning the strength of the exchange couplings in various directions is discussed.

引用

页数：7

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