Magnetic superfluid state in the frustrated spinel oxide CdCr2O4revealed by ultrahigh magnetic fields
Magnetic superfluid state in the frustrated spinel oxide CdCr2O4revealed by ultrahigh magnetic fields
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超高磁场揭示受抑尖晶石氧化物 CdCr2O4 中的磁超流体状态
DOI：
10.1103/physrevb.87.214424
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发表时间：
2013
影响因子：
3.7
通讯作者：
H. Ueda
中科院分区：
文献类型：
--
作者：
A. Miyata;S. Takeyama;H. Ueda
我们研究了一个典型的三维阻挫磁体，CdCrO，在高达120 T的磁场中，使用电磁感应方法和磁光光谱的-跃迁和激子-磁振子-声子跃迁的磁场诱导相。在磁光吸收强度以及微分磁化之前，一个完全极化的磁相，揭示了与晶体和磁结构的变化伴随着一阶相变的磁相的异常。一个磁超流态，如伞形的磁性结构或自旋-自旋态，提出作为该相的候选者，这是普遍发现的铬尖晶石氧化物，CrO（Zn，Cd，Hg）系列。
We investigated the magnetic-field-induced phases of a typical three-dimensional frustrated magnet, CdCrO, in magnetic fields of up to 120 T using both the electromagnetic induction method and magneto-optical spectroscopy of the-transitions and the exciton-magnon-phonon transitions. Anomalies were observed in the magneto-optical absorption intensity as well as the differential magnetization prior to a fully polarized magnetic phase, revealing a magnetic phase associated with changes in both the crystal and magnetic structures accompanied by the first-order phase transition. A magnetic superfluid state, such as an umbrella-like magnetic structure or a spin-nematic state, is proposed as a candidate for this phase, which is found universally in the series of chromium spinel oxides,CrO(Zn, Cd, Hg).