Wide frequencies range of spin excitations in a rare-earth Bi-doped iron garnet with a giant Faraday rotation

被引：40

作者：

Parchenko, Sergii ^{[1
]}

Stupakiewicz, Andrzej ^{[1
]}

Yoshimine, Isao ^{[2
]}

Satoh, Takuya ^{[2
,3
]}

Maziewski, Andrzej ^{[1
]}

机构：

[1] Univ Bialystok, Fac Phys, Magnetism Lab, PL-15424 Bialystok, Poland

[2] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan

[3] Japan Sci & Technol Agcy, PRESTO, Tokyo 1020076, Japan

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 17期

关键词：

FILMS; EMISSION;

D O I：

10.1063/1.4826248

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ultrafast magnetization dynamics of a rare-earth Bi-doped garnet were studied using an optical pump-probe technique via the inverse Faraday effect. We observed a wide range of frequency modes of the magnetization precession, covering two orders of magnitude. The excitation efficiency of low-frequency precessions in the GHz range, together with a significant beating effect, strongly depended on the amplitude of the external magnetic field. On the contrary, high-frequency precession was independent of the external magnetic field. The obtained results may be exploited in the development of wide class of microwave and magneto-optical devices. (C) 2013 AIP Publishing LLC.

引用

页数：4