Electronic excitations of magnetic impurity state in diluted magnetic semiconductor (Ga,Mn)As

Abstract

The electronic structure of doped Mn in (Ga,Mn)As is studied by resonant inelastic X-ray scattering (RIXS). From configuration-interaction cluster-model calculations, the line shapes of the Mn $L_3$ RIXS spectra can be explained by $d$-$d$ excitations from the Mn${}^{3+}$ ground state, dominated by charge-transferred states, rather than a Mn${}^{2+}$ ground state. Unlike archetypical $d$-$d$ excitation, the peak widths are broader than the experimental energy resolution. We attribute the broadening to a finite lifetime of the $d$-$d$ excitations, which decay rapidly to electron-hole pairs in the host valence and conduction bands through hybridization of the Mn $3d$ orbital with the ligand band.

5 pages, 3 figures

References in corpus (8)

• Theory of ferromagnetic (III,Mn)V semiconductors
• Intense paramagnon excitations in a large family of high-temperature superconductors
• Experimental probing of the interplay between ferromagnetism and localisation in (Ga,Mn)As
• Controlling Curie temperature in (Ga,Ms)As through location of the Fermi level within the impurity band
• Impurity Band Conduction in a High Temperature Ferromagnetic Semiconductor
• On the character of states near the Fermi level in (Ga,Mn)As: impurity to valence band crossover
• Curie point singularity in the temperature derivative of resistivity in (Ga,Mn)As
• Nature of magnetic coupling between Mn ions in as-grown Ga${}_{1-x}$Mn${}_x$As studied by x-ray magnetic circular dichroism

Cited by in corpus (5)

• Adjacent Fe-Vacancy Interactions as the Origin of Room Temperature Ferromagnetism in (In${}_{1-x}$Fe${}_x$)${}_2$O${}_3$
• Hybridization between the ligand $p$ band and Fe-3$d$ orbitals in the p-type ferromagnetic semiconductor (Ga,Fe)Sb
• Anisotropic spin distribution and perpendicular magnetic anisotropy in the layered ferromagnetic semiconductor (Ba,K)(Zn,Mn)${}_2$As${}_2$
• Evolution of the Fe-3$d$ impurity band state as the origin of high Curie temperature in p-type ferromagnetic semiconductor (Ga,Fe)Sb
• 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