Element-Specific Probing of Ultrafast Spin Dynamics in Multisublattice Magnets with Visible Light

被引：83

作者：

Khorsand, A. R. ^{[1
]}

Savoini, M. ^{[1
]}

Kirilyuk, A. ^{[1
]}

Kimel, A. V. ^{[1
]}

Tsukamoto, A. ^{[2
,3
]}

Itoh, A. ^{[2
]}

Rasing, Th ^{[1
]}

机构：

[1] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands

[2] Nihon Univ, Coll Sci & Technol, Chiba, Japan

[3] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama, Japan

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 10期

基金：

欧洲研究理事会;

关键词：

MAGNETOOPTICAL PROPERTIES; CIRCULAR-DICHROISM; NICKEL; GD; FE; CO; TB;

D O I：

10.1103/PhysRevLett.110.107205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate the feasibility of element-specific probing of ultrafast spin dynamics in the multisublattice magnet TbFe in the visible spectral range. In particular, we show that one can selectively study the dynamics of Tb and Fe sublattices choosing the wavelength of light below and above 610 nm, respectively. We observe that, despite their antiferromagnetic coupling in the ground state, the Tb and Fe spins temporarily align ferromagnetically after excitation with an intense 55-fs laser pulse, after which they relax to their initial states due to the strong anisotropy in Tb. DOI: 10.1103/PhysRevLett.110.107205

引用

页数：5

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