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arXiv 1608.00467cond-mat.str-el
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自旋轨道耦合引起的IrTe $_2$相变

Phase Transition in IrTe$_2$ induced by spin-orbit coupling

S. Koley

摘要:

IrTe $_2$是一个有趣的系统,在270 K附近出现了可疑的密度波跃迁,然后掺杂高原子序数的材料,出现了超导性。Te和Ir的较高原子序数支持该系统中的强自旋-轨道耦合。利用LDA能带结构的动力学平均场论,在该体系中引入Rashba自旋轨道耦合,对该体系中的异常电阻率和相关跃迁进行了解释。Ir-5d带的DMFT结果除了轨道选择性赝能隙钉扎在费米能级上外没有明显变化,而Te-p带在费米能级上表现出范霍夫奇异性。最后,我讨论了这些结果在理论上理解IrTe $_2$有序的影响。

英文摘要:

IrTe$_2$ has been renewed as an interesting system showing competing phenomenon between a questionable density-wave transition near 270 K followed by superconductivity with doping of high atomic number materials. Higher atomic numbers of Te and Ir supports strong spin-orbital coupling in this system. Using dynamical mean field theory with LDA band structure I have introduced Rashba spin orbit coupling in this system to get the interpretation for anomalous resistivity and related transition in this system. While no considerable changes are observed in DMFT results of Ir-5d band other than orbital selective pseudogap pinned to Fermi level, Te-p band shows a van Hove singularity at the Fermi level except low temperature. Finally I discuss the implications of these results in theoretical understanding of ordering in IrTe$_2$.

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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