[17p-D704-1~16] 10.1 新物質・新機能創成（作製・評価技術）

▲ [17p-D704-7] Minority-spin Dominated Band Structure of Fe₄N Thin Films Revealed by Spin- and Angle-Resolved Photoelectron Spectroscopy

Karen Nakanishi¹、Kiyotaka Ohwada¹、Kenta Kuroda¹、Kazuki Sumida²、Hitoshi Sato¹、Koji Miyamoto¹、Taichi Okuda¹、Shinji Isogami³、Keisuke Masuda³、Yuya Sakuraba^3,4、〇Akio Kimura¹ (1.Hiroshima Univ.、2.JAEA、3.NIMS、4.PRESTO)

キーワード：Fe4N thin film, inverse TMR, spin-ARPES

The bulk band structure of in-situ prepared ferromagnetic Fe₄N thin film has been studied by spin- and angle-resolved photoelectron spectroscopy using synchrotron radiation. It is found that most of the observed bands are of minority spin near the Fermi level, which well explains the inverse tunneling magnetoresistance and negative anisotropic magnetoresistance.