Magnetic Properties and Electronic Configurations of Mn Ions in the Diluted Magnetic Semiconductor Ba$_{1-x}$K$_{x}$(Zn$_{1-y}$Mn$_{y}$)$_{2}$As$_{2}$ Studied by X-ray Magnetic Circular Dichroism and Resonant Inelastic X-ray Scattering

H. Suzuki; G. Q. Zhao; J. Okamoto; S. Sakamoto; Z. -Y. Chen; Y. Nonaka; G. Shibata; K. Zhao; B. J. Chen; W. -B. Wu; F. -H. Chang; H. -J. Lin; C. -T. Chen; A. Tanaka; M. Kobayashi; Bo Gu; S. Maekawa; Y. J. Uemura; C. Q. Jin; D. J. Huang; A. Fujimori

doi:10.7566/JPSJ.91.064710

paper

Magnetic Properties and Electronic Configurations of Mn Ions in the Diluted Magnetic Semiconductor Ba $_{1 - x}$ K $_{x}$ (Zn $_{1 - y}$ Mn $_{y}$ ) $_{2}$ As $_{2}$ Studied by X-ray Magnetic Circular Dichroism and Resonant Inelastic X-ray Scattering

arXiv:2201.13061 · doi:10.7566/JPSJ.91.064710

Abstract

The magnetic properties and the electronic excitations of the new diluted magnetic semiconductor Ba $_{1 - x}$ K $_{x}$ (Zn $_{1 - y}$ Mn $_{y}$ ) $_{2}$ As $_{2}$ have been studied by x-ray magnetic circular dichroism (XMCD) and resonant inelastic x-ray scattering (RIXS) at the Mn $L_{2, 3}$ edge. The sum rule analysis of the XMCD spectra yields the net spin moment of $0.45 μ_{B}$ /Mn and the small orbital moment of $0.05 μ_{B}$ /Mn. This indicates that the Mn atoms are in the high-spin configurations of $d^{5}$ , whereas the presence of competing ferromagnetic and antiferromagnetic interactions between the Mn ions reduces the net spin moment. RIXS spectra show broad peaks from 1 to 6 eV energy loss, which originate from the $d$ - $d$ crystal field excitations of the Mn ions. Based on a comparison of the RIXS line shapes with those of Ga $_{1 - x}$ Mn $_{x}$ As, we conclude that the ground state of Mn in Ba $_{1 - x}$ K $_{x}$ (Zn $_{1 - y}$ Mn $_{y}$ ) $_{2}$ As $_{2}$ consists not only of the charge-transferred $3 d^{5} L$ electron configuration ( $L$ : ligand hole) with weakly bound holes as in Ga $_{1 - x}$ Mn $_{x}$ As, but also of the pure $3 d^{5}$ configuration with free holes.

Magnetic Properties and Electronic Configurations of Mn Ions in the Diluted Magnetic Semiconductor Ba1−x​Kx​(Zn1−y​Mny​)2​As2​ Studied by X-ray Magnetic Circular Dichroism and Resonant Inelastic X-ray Scattering

Abstract

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Magnetic Properties and Electronic Configurations of Mn Ions in the Diluted Magnetic Semiconductor Ba $_{1 - x}$ K $_{x}$ (Zn $_{1 - y}$ Mn $_{y}$ ) $_{2}$ As $_{2}$ Studied by X-ray Magnetic Circular Dichroism and Resonant Inelastic X-ray Scattering