Electronic structure and magnetic anisotropy of L1o-FePt thin film studied by hard x-ray photoemission spectroscopy and first-principles calculations

被引：21

作者：

Ueda, S. ^{[1
,2
]}

Mizuguchi, M. ^{[3
]}

Miura, Y. ^{[4
,5
]}

Kang, J. G. ^{[3
]}

Shirai, M. ^{[5
]}

Takanashi, K. ^{[3
]}

机构：

[1] Natl Inst Mat Sci, Quantum Beam Unit, Tsukuba, Ibaraki 3050047, Japan

[2] Natl Inst Mat Sci, SPring 8, Synchrotron Xray Stn, Sayo, Hyogo 6795148, Japan

[3] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[4] Kyoto Inst Technol, Grad Sch Sci & Engn, Sakyo Ku, Kyoto 6068585, Japan

[5] Tohoku Univ, Elect Commun Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

APPLIED PHYSICS LETTERS | 2016年 / 109卷 / 04期

关键词：

PHOTOELECTRON-SPECTROSCOPY; MAGNETOCRYSTALLINE ANISOTROPY; ENERGY; FEPT;

D O I：

10.1063/1.4959957

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the electronic structure of the L1(o) ordered FePt thin film by hard x-ray photoemission spectroscopy (HAXPES), cluster model, and first-principles calculations to investigate the relationship between the electronic structure and perpendicular magneto-crystalline anisotropy (MCA). The Fe 2p core-level HAXPES spectrum of the ordered film revealed the strong electron correlation in the Fe 3d states and the hybridization between the Fe 3d and Pt 5d states. By comparing the experimental valence band structure with the theoretical density of states, the strong electron correlation in the Fe 3d states modifies the valence band electronic structure of the L1(o) ordered FePt thin film through the Fe 3d-Pt 5d hybridization. These results strongly suggest that the strong electron correlation effect in the Fe 3d states and the Fe 3d-Pt 5d hybridization as well as the spin-orbit interaction in the Pt 5d states play important roles in the perpendicular MCA for L1(o)-FePt. Published by AIP Publishing.

引用

页数：5

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