论文标题
在高磁场中
Novel quantum phase of the chromium spinel oxide HgCr$_{\rm 2}$O$_{\rm 4}$ in high magnetic fields
论文作者
论文摘要
在这项研究中，我们进行了磁联效应和铬型旋转氧化物HGCR $ _2 $ o $ $ _4 $的比热测量值，其中磁性cr $^{3+} $ ions形成了一个非常沮丧的pyrochlore lattice lattice lattice coplate coupling。除了已知的磁场诱导的相外，我们的热力学测量值还检测到磁化饱和之前的新量子相，这是从Pyrochlore lattice Antiferromagnet的经典理论和自旋晶格耦合的经典理论中所期望的。根据最近的理论模型计算，我们讨论了该量子阶段出现自旋列状态的可能性。
In this study, we have performed the magnetocaloric effect and the specific heat measurements of chromium spinel oxide HgCr$_2$O$_4$, wherein the magnetic Cr$^{3+}$ ions form a highly frustrated pyrochlore lattice with significant spin-lattice coupling. In addition to the known magnetic-field-induced phases, our thermodynamic measurements detect a novel quantum phase just before the saturation of the magnetization, which has not been expected from the classical theories of the pyrochlore lattice antiferromagnet with spin-lattice coupling. Based on recent theoretical model calculation, we discuss the possibility of a spin nematic state appearing for this quantum phase.
