arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.4683cond-mat.str-elcond-mat.supr-con
收藏

La $_2$ CuO $_4$中电荷激发的性质--Cu $K$边共振非弹性X射线散射的动量分辨

Unraveling the Nature of Charge Excitations in La$_2$CuO$_4$ with Momentum-Resolved Cu $K$-edge Resonant Inelastic X-ray Scattering

C. -C. Chen, B. Moritz, F. Vernay, J. N. Hancock, S. Johnston, C. J. Jia, G. Chabot-Couture, M. Greven, I. Elfimov, G. A. Sawatzky, T. P. Devereaux

摘要:

精确对角化模型计算的结果揭示了与不同的拉曼损耗峰在铜$K$ -边缘共振非弹性X射线散射(RIXS)从La $_{2}$ CuO $_{4}$的状态的轨道特性。该模型包括必要的电子轨道,以突出非本地张-赖斯单线态,电荷转移和$d$ - $d$激发,以及顶端氧2 $p_z$字符的状态。这些激发的分散体进行了讨论,共振最终状态波函数映射的前景。一个良好的协议与实验强调了大量的多轨道字符的RIXS公司在能量转移范围1-6 eV。

英文摘要:

Results of model calculations using exact diagonalization reveal the orbital character of states associated with different Raman loss peaks in Cu $K$-edge resonant inelastic X-ray scattering (RIXS) from La$_{2}$CuO$_{4}$. The model includes electronic orbitals necessary to highlight non-local Zhang-Rice singlet, charge transfer and $d$-$d$ excitations, as well as states with apical oxygen 2$p_z$ character. The dispersion of these excitations is discussed with prospects for resonant final state wave-function mapping. A good agreement with experiments emphasizes the substantial multi-orbital character of RIXS profiles in the energy transfer range 1-6 eV.

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。

↑