Magnetic properties and electronic configurations of Mn ions in the diluted magnetic semiconductor BaK(ZnMn)As studied by X-ray magnetic circular dichroism and resonant inelastic X-ray scattering

X線磁気円二色性および共鳴非弾性X線散乱による希薄磁性半導体BaK(ZnMn)As中のMnイオンの磁性と電子状態に関する研究

鈴木 博人*; Zhao, G.*; 岡本 淳*; 坂本 祥哉*; Chen, Z.-Y.*; 野中 洋亮*; 芝田 悟朗 ; Zhao, K.*; Chen, B.*; Wu, W.-B.*; Chang, F.-H.*; Lin, H.-J.*; Chen, C.-T.*; 田中 新*; 小林 正起*; Gu, B.*; 前川 禎通; 植村 泰朋*; Jin, C.*; Huang, D.-J.*; 藤森 淳*

Suzuki, Hakuto*; Zhao, G.*; Okamoto, Jun*; Sakamoto, Shoya*; Chen, Z.-Y.*; Nonaka, Yosuke*; Shibata, Goro; Zhao, K.*; Chen, B.*; Wu, W.-B.*; Chang, F.-H.*; Lin, H.-J.*; Chen, C.-T.*; Tanaka, Arata*; Kobayashi, Masaki*; Gu, B.*; Maekawa, Sadamichi; Uemura, Yasutomo*; Jin, C.*; Huang, D.-J.*; Fujimori, Atsushi*

The magnetic properties and the electronic excitations of the new diluted magnetic semiconductor BaK(ZnMn)As have been studied by X-ray magnetic circular dichroism (XMCD) and resonant inelastic X-ray scattering (RIXS). The sum rule analysis of the XMCD spectra indicates that the Mn atoms are in the high-spin configurations of , whereas the presence of competing ferromagnetic and antiferromagnetic interactions between the Mn ions reduces the net spin moment. Based on a comparison of the RIXS line shapes with those of GaMnAs, it is concluded that the ground state of Mn in BaK(ZnMn)As consists of both the and electron configurations.