arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0803.2927cond-mat.str-el
收藏

Sr2IrO4中相对论自旋轨道耦合诱导的新型Jeff = 1/2 Mott态

Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4

B. J. Kim, Hosub Jin, S. J. Moon, J. -Y. Kim, B. -G. Park, C. S. Leem, Jaeju Yu, T. W. Noh, C. Kim, S. -J. Oh, J. -H. Park, V. Durairaj, G. Cao, E. Rotenberg

摘要:

我们研究了5d过渡金属氧化物Sr 2 IrO 4的电子结构,使用角分辨光电发射,光学电导率,X射线吸收测量和第一性原理能带计算。该系统被发现是很好地描述了新的有效总角动量杰夫态,其中相对论自旋轨道(SO)耦合充分考虑在一个大的晶体场。尽管存在离域Ir 5d态,但Jeffs态形成的能带非常窄,即使很小的相关能也能导致Jeffs = 1/2 Mott基态具有独特的电子和磁性行为,这表明了一类新的Jeffs量子自旋驱动的相关电子现象.

英文摘要:

We investigated electronic structure of 5d transition-metal oxide Sr2IrO4 using angle-resolved photoemission, optical conductivity, and x-ray absorption measurements and first-principles band calculations. The system was found to be well described by novel effective total angular momentum Jeff states, in which relativistic spin-orbit (SO) coupling is fully taken into account under a large crystal field. Despite of delocalized Ir 5d states, the Jeff-states form so narrow bands that even a small correlation energy leads to the Jeff = 1/2 Mott ground state with unique electronic and magnetic behaviors, suggesting a new class of the Jeff quantum spin driven correlated-electron phenomena.

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。

↑