Modulation of ultrafast laser-induced magnetization precession in BiFeO3-coated La0.67Sr0.33MnO3 thin films

被引：6

作者：

Wan, Qian ^{[1
,2
]}

Jin, KuiJuan ^{[1
,2
,3
]}

Wang, JieSu ^{[1
,2
]}

Yao, HongBao ^{[1
,2
]}

Gu, JunXing ^{[1
,2
]}

Guo, HaiZhong ^{[1
]}

Xu, XiuLai ^{[1
,2
]}

Yang, GuoZhen ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2017年 / 60卷 / 04期

基金：

中国国家自然科学基金;

关键词：

magnetization precession; ultrafast time-resolved magneto-optical Kerr effect; perovskite oxide; interface; PHONON DYNAMICS; ELECTRON;

D O I：

10.1007/s11433-017-9006-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ultrafast laser-excited magnetization dynamics of ferromagnetic (FM) La0.67Sr0.33MnO3 (LSMO) thin films with BiFeO3 (BFO) coating layers grown by laser molecular beam epitaxy are investigated using the optical pump-probe technique. Uniform magnetization precessions are observed in the films under an applied external magnetic field by measuring the time-resolved magneto-optical Kerr effect. The magnetization precession frequencies of the LSMO thin films with the BFO coating layers are lower than those of uncoated LSMO films, which is attributed to the suppression of the anisotropy field induced by the exchange interaction at the interface between the antiferromagnetic order of BFO and the FM order of LSMO.

引用

页数：5

共 29 条

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