arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0912.2052cond-mat.str-el
收藏

Mn3O4的磁结构量子相位映射

Mapping the magneto-structural quantum phases of Mn3O4

M. Kim, X. M. Chen, E. Fradkin, P. Abbamonte, S. L. Cooper

摘要:

我们提出了温度依赖的X射线衍射和温度和场依赖的拉曼散射研究的单晶Mn3O4,揭示了新的磁结构相,由于强自旋轨道耦合,几何挫折,和施加的磁场之间的相互作用,演变在尖晶石。我们观察到在T2= 33 K的公度磁转变处从四斜晶系到单斜晶系的结构转变,表明这种结构转变的开始和性质可以通过施加磁场来控制,并找到了场调谐量子相变到四斜晶系无公度或自旋玻璃相的证据。

英文摘要:

We present temperature-dependent x-ray diffraction and temperature- and field-dependent Raman scattering studies of single crystal Mn3O4, which reveal the novel magnetostructural phases that evolve in the spinels due to the interplay between strong spin-orbital coupling, geometric frustration, and applied magnetic field. We observe a structural transition from tetragonal to monoclinic structures at the commensurate magnetic transition at T2=33K, show that the onset and nature of this structural transition can be controlled with an applied magnetic field, and find evidence for a field-tuned quantum phase transition to a tetragonal incommensurate or spin glass phase.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑