Magnetic-field switching of crystal structure in an orbital-spin-coupled system:: MnV2O4 -: art. no. 197202

被引：116

作者：

Adachi, K ^{[1
]}

Suzuki, T ^{[1
]}

Kato, K ^{[1
]}

Osaka, K ^{[1
]}

Takata, M ^{[1
]}

Katsufuji, T ^{[1
]}

机构：

[1] Waseda Univ, Dept Phys, Tokyo 1698555, Japan

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.95.197202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We studied the magnetic and structural properties of spinel MnV2O4, which has S=5/2 spin with no orbital degrees of freedom on the Mn2+ site and S=1 spin and three orbital degrees of freedom on the V3+ site. We found that the ferrimagnetic ordering at T-N=56.5 K and the structural phase transition at T-s=53.5 K are closely correlated in this compound and found a switching of crystal structure between cubic and tetragonal phases by the magnetic field. This phenomenon can be explained by the coupling between orbital and spin degrees of freedom in the t(2g) states of the V site.

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页数：4

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