论文标题
lacoo $ _ {3} $中的两个自旋状态结晶
Two Spin-State Crystallizations in LaCoO$_{3}$
论文作者
论文摘要
我们使用我们的最先进的应变量表对钙钛矿$ \ rm {lacoo} _ {3} $上方的磁截面研究进行了研究，以研究电子相关性与自旋交叉之间的相互作用。关于在$ \ rm {lacoo} _ {3} $中的两个新阶段是在高磁场上是由于结晶而产生的，还是自旋交叉期间的Bose-Einstein凝结导致的，作为自旋状态中定位和定位的表现。我们表明，这两个阶段都是结晶而不是凝结，并且两个阶段的结晶是不同的，这两个阶段是根据这两个阶段作为具有不同高度的磁刻型静态表现出的观察结果。自旋状态的结晶出现了，体现了自旋跨界的局部性和相互作用，并随着较大且合作的晶格变化而变化。
We report a magnetostriction study of a perovskite $\rm{LaCoO}_{3}$ above 100 T using our state-of-the-art strain gauge to investigate an interplay between electron correlations and spin crossover. There has been a controversy regarding whether two novel phases in $\rm{LaCoO}_{3}$ at high magnetic fields result from crystallizations or Bose-Einstein condensation during spin crossover as manifestations of localization and delocalization in spin states, respectively. We show that both phases are crystallizations rather than condensations, and the two crystallizations are different, based on the observations that the two phases exhibit as magnetostriction plateaux with distinct heights. The crystallizations of spin states have emerged manifesting the localizations and interactions in spin crossover with large and cooperative lattice changes.
