[12p-S302-1~17] 10.4 半導体スピントロニクス・超伝導・強相関

▲ [12p-S302-15] Orbital hybridization of Fe 3d orbitals with the host InSb bands in n-type ferromagnetic semiconductor (In,Fe)Sb

〇Ryo Okano¹、Tomoki Hotta¹、Takahito Takeda¹、Kohsei Araki¹、Kengo Takase¹、Le Duc Anh¹、Shoya Sakamoto²、Yukiharu Takeda³、Atsushi Fujimori^4,5、Masaaki Tanaka^1,6、Masaki Kobayashi^1,6 (1.Dep. Eng., Univ. of Tokyo、2.ISSP, Univ. of Tokyo、3.JAEA、4.Dep. Phys., Univ. of Tokyo、5.Dep. Appl. Phys., Waseda Univ.、6.CSRN, Univ. of Tokyo)

キーワード：Ferromagnetic Semiconductor, X-ray Magnetic Circular Dichroism

Spintronics is a research field that uses both the charge and spin degrees of freedom of electrons, and new spintronics devices beyond the existing electronics framework have been studied. Promising materials for spintronics are the ferromagnetic semiconductors (FMSs), which have the properties of both semiconductors and magnetic materials. However, much remains unknown about the mechanism of ferromagnetism in FMSs, so understanding the magnetic properties of FMSs is important for the application and development of spintronics. In this study, the magnetic state of (In,Fe)Sb has been investigated using X-ray Magnetic Circular Dichroism. The observations suggest that the magnetism of (In,Fe)Sb originates from the hybridization of the Fe 3d orbitals with the InSb bands.