Journal Article X-ray magnetic circular dichroism and hard X-ray photoelectron spectroscopy of tetragonal Mn72Ge28 epitaxial thin film

Kim, Jinhyeok  ,  Mizuguchi, Masaki  ,  Inami, Nobuhito  ,  Ueno, Tetsuro  ,  Ueda, Shigenori  ,  Takanashi, Koki

57 ( 4S )  , pp.04FN10-1 - 04FN10-3 , 2018-03 , IOP Publishing Ltd
An epitaxially grown Mn72Ge28 film with a tetragonal crystal structure was fabricated. It was clarified that the film had a perpendicular magnetization and a high perpendicular magnetic anisotropy energy of 14.3Merg/cm3. The electronic structure was investigated by X-ray magnetic circular dichroism and hard X-ray photoelectron spectroscopy. The obtained X-ray magnetic circular dichroism spectrum revealed that the Mn orbital magnetic moment governed the magnetocrystalline anisotropy of the Mn72Ge28 film. A doublet structure was observed for the Mn 2p3/2 peak of hard X-ray photoelectron spectrum, indicating the spin exchange interaction between the 2p core-hole and 3d valence electrons.© 2018 The Japan Society of Applied Physics

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