Spin and orbital frustration in MnSc2S4 and FeSc2S4 -: art. no. 116401

被引：190

作者：

Fritsch, V

Hemberger, J

Büttgen, N

Scheidt, EW

von Nidda, HAK

Loidl, A

Tsurkan, V

机构：

[1] Univ Augsburg, Inst Phys, Ctr Elect Correlat & Magnetism, D-86159 Augsburg, Germany

[2] Univ Augsburg, Inst Phys, Lehrstuhl Chem Phys & Mat Wissensch, D-86159 Augsburg, Germany

[3] Moldavian Acad Sci, Inst Appl Phys, Kishinev MD 2028, Moldova

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.92.116401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Crystal structure, magnetic susceptibility, and specific heat were measured in the normal cubic spinel compounds MnSc2S4 and FeSc2S4. Down to the lowest temperatures, both compounds remain cubic and reveal strong magnetic frustration. Specifically the Fe compound is characterized by a Curie-Weiss (CW) temperature Theta(CW)=-45 K and does not show any indications of order down to 50 mK. In addition, the Jahn-Teller ion Fe2+ is orbitally frustrated. Hence, FeSc2S4 belongs to the rare class of spin-orbital liquids. MnSc2S4 is a spin liquid for temperatures T>T(N)approximate to2 K.

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页码：116401 / 1

页数：4

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