Microscopic and Spectroscopic Studies of Light-Induced Magnetization Switching of GdFeCo Facilitated by Photoemission Electron Microscopy

被引：8

作者：

Ohkochi, Takuo ^{[1
]}

Fujiwara, Hidenori ^{[2
]}

Kotsugi, Masato ^{[1
,6
]}

Tsukamoto, Arata ^{[3
,7
]}

Arai, Kuniaki ^{[4
]}

Isogami, Shinji ^{[5
]}

Sekiyama, Akira ^{[2
]}

Yamaguchi, Jun'ichi ^{[2
]}

Fukushima, Kazuaki ^{[2
]}

Adam, Roman ^{[8
]}

Schneider, Claus M. ^{[8
]}

Nakamura, Tetsuya ^{[1
]}

Kodama, Kenji ^{[1
]}

Tsunoda, Masakiyo ^{[5
]}

Kinoshita, Toyohiko ^{[1
,6
]}

Suga, Shigemasa ^{[2
,8
]}

机构：

[1] Japan Synchrotron Radiat Res Inst SPring 8, Sayo, Hyogo 6795198, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[3] Nihon Univ, Coll Sci & Technol, Funabashi, Chiba 2748501, Japan

[4] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[5] Tohoku Univ, Dept Elect Engn, Sendai, Miyagi 9808579, Japan

[6] JST CREST, Kawaguchi, Saitama 3320012, Japan

[7] BESSY II, Helmholtz Zentrum Berlin Mat & Energie, D-12489 Berlin, Germany

[8] Res Ctr Julich, Peter Grunberg Inst PGI 6, D-52425 Julich, Germany

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2012年 / 51卷 / 07期

基金：

日本学术振兴会;

关键词：

REVERSAL; DYNAMICS; NICKEL; SPEED;

D O I：

10.1143/JJAP.51.073001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

By means of soft X-ray photoemission electron microscopy (PEEM), we have for the first time observed spatially and temporally resolved element-specific magnetization switching driven by circularly polarized femtosecond laser pulses. We have confirmed that the magnetization switching depending on the helicity of the circularly polarized laser occurs in the region where the spin temperature is raised appropriately. It is also found that the electronic states in the irradiated region remain unchanged even after millions magnetization reversal cycles. (C) 2012 The Japan Society of Applied Physics

引用

页数：5

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