Berezinskii-Kosterlitz-Thouless type scenario in the molecular spin liquid ACr2O4(A = Mg, Zn, Cd)

被引：16

作者：

Hemmida, M. ^{[1
]}

von Nidda, H. -A. Krug ^{[1
]}

Tsurkan, Vladimir ^{[1
,2
]}

Loidl, A. ^{[1
]}

机构：

[1] Univ Augsburg, Ctr Elect Correlat & Magnetism, Expt Phys 5, D-86135 Augsburg, Germany

[2] Moldavian Acad Sci, Inst Appl Sci, MD-2028 Kishinev, Moldova

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 22期

关键词：

2-DIMENSIONAL SYSTEMS; NEUTRON-SCATTERING; TRIANGULAR LATTICE; GLASS-TRANSITION; PHASE-TRANSITION; BOSON PEAK; FRUSTRATION; ORDER; ANTIFERROMAGNET; RESONANCE;

D O I：

10.1103/PhysRevB.95.224101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The spin relaxation in chromium spinel oxides ACr(2)O(4) (A = Mg, Zn, Cd) is investigated in the paramagnetic regime by electron spin resonance (ESR). The temperature dependence of the ESR linewidth indicates an unconventional spin-relaxation behavior, similar to spin-spin relaxation in the two-dimensional (2D) chromium-oxide triangular lattice antiferromagnets. The data can be described in terms of a generalized Berezinskii-Kosterlitz-Thouless (BKT) type scenario for 2D systems with additional internal symmetries. Based on the characteristic exponents obtained from the evaluation of the ESR linewidth, short-range order with a hidden internal symmetry is suggested.

引用

页数：6

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