Orbital-selective electronic excitations in iron arsenides revealed by simulated nonresonant inelastic x-ray scattering
Orbital-selective electronic excitations in iron arsenides revealed by simulated nonresonant inelastic x-ray scattering
复制标题
模拟非共振非弹性 X 射线散射揭示砷化铁中的轨道选择性电子激发
DOI：
10.1103/physrevb.92.195103
复制
发表时间：
2015
影响因子：
3.7
通讯作者：
T. Tohyama
中科院分区：
文献类型：
--
作者：
K. Tsutsui;E. Kaneshita;T. Tohyama
非共振非弹性 X 射线散射 (NIXS) 是一种检测电子系统中电荷激发的可能工具。此外，高动量转移区域的多极跃迁为确定多轨道流动 3d 电子系统中的轨道选择性电子激发提供了新的可能性。作为一个理论例子，我们选择了砷化铁的反铁磁态，并证明通过在 NIXS 中选择适当的动量转移可以检测到轨道选择性激发。我们认为 NIXS 和共振非弹性 X 射线散射是互补的，可以充分理解多轨道流动电子系统中轨道激发的性质。
Nonresonant inelastic x-ray scattering (NIXS) is a possible tool to detect charge excitations in electron systems. In addition, multipole transitions at high-momentum-transfer region open a new possibility to determine orbital-selective electronic excitations in multi-orbital itinerant 3d electron systems. As a theoretical example, we chose the antiferromagnetic state of iron arsenides and demonstrate that the orbital-selective excitations are detectable by choosing appropriate momentum transfer in NIXS. We propose that both NIXS and resonant inelastic x-ray scattering are complementary to each other for fully understanding the nature of orbital excitations in multi-orbital itinerant electron systems.