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論文

Detecting halfmetallic electronic structures of spintronic materials in a magnetic field

藤原 秀紀*; 梅津 理恵*; 黒田 文彬*; 宮脇 淳*; 樫内 利幸*; 西本 幸平*; 永井 浩大*; 関山 明*; 入澤 明典*; 竹田 幸治; et al.

Scientific Reports (Internet), 11(1), p.18654_1 - 18654_9, 2021/09

 被引用回数:0

Band-gap engineering is one of the fundamental techniques in semiconductor technology. To fully utilize the spintronic material, it is essential to optimize the spin-dependent electronic structure in operando conditions by applying the magnetic and/or electric fields. Here we present a new spectroscopic technique to probe the spin-polarized electronic structures by using magnetic circular dichroism (MCD) in resonant inelastic soft X-ray scattering (RIXS) under an external magnetic field. Thanks to the spin-selective dipole-allowed transitions in the RIXS-MCD, we have successfully demonstrated the direct evidence of the perfectly spin-polarized electronic structures for the prototypical halfmetallic Heusller alloy, Co$$_{2}$$MnSi. The RIXS-MCD is a promising tool to probe the spin-dependent carriers and band-gap with element specific way induced in buried magnetic layers under operando conditions.

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