Theory of resonant inelastic x-ray scattering and elementary excitations in the systems with strong spin-orbit couplingt

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05157
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Gunma University
• Principal Investigator: Nagao Tatsuya 群馬大学, 大学院理工学府, 准教授 (00237497)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: スピン軌道相互作用 / 共鳴非弾性X線散乱 / イリジウム酸化物 / 銅酸化物 / 磁気励起分散 / エキシトン励起

Outline of Final Research Achievements

In order to investigate the properties of elementary excitations from iridium oxides, known as the systems with strong spin-orbit interaction (SOI), I have studied the resonant inelastic x-ray scattering spectra (RIXS) of the systems. On the basis of the itinerant electron scheme, I have developed a theoretical framework for the spectral analysis. I have obtained several new findings. For instance, the presence of a new type of the band-splitting of the magnetic dispersion attributed to Hund's coupling and Coulomb interaction, anomaly appeared in the RIXS intensity in the systems with moderate SOI, and so on.

Free Research Field

物理学