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arXiv 2103.06033cond-mat.str-el
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具有自旋轨道耦合和晶场的双$t_{2g}$空穴的磁相位

Magnetic phases for two $t_{2g}$ holes with spin-orbit coupling and crystal field

Pascal Strobel, Friedemann Aust, Maria Daghofer

摘要:

研究了具有强自旋轨道耦合的正方晶格莫特绝缘体的$t_{2g}$能级中的两个空穴。精确对角化的自旋轨道模型有效的现场强相互作用,但任意的自旋轨道耦合和晶体场是由一个有效的三体模型(有效的强自旋轨道耦合)和半经典的模型变体。我们提供的磁相图取决于晶体场和自旋轨道耦合,这在很大程度上同意的半经典和量子模型,以及激发光谱表征的各个阶段。

英文摘要:

We investigate two holes in the the $t_{2g}$ levels of a square-lattice Mott insulator with strong spin-orbit coupling. Exact diagonalization of a spin-orbital model valid at strong onsite interactions, but arbitrary spin-orbit coupling and crystal field is complemented by an effective triplon model (valid for strong spin-orbit coupling) and by a semiclassical variant of the model. We provide the magnetic phase diagram depending on crystal field and spin-orbit coupling, which largely agrees for the semiclassical and quantum models, as well as excitation spectra characterizing the various phases.

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。

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