Observation of Ferromagnetic Resonance in SrRuO3 by the Time-Resolved Magneto-Optical Kerr Effect

被引：48

作者：

Langner, M. C. ^{[1
,2
]}

Kantner, C. L. S. ^{[1
,2
]}

Chu, Y. H. ^{[3
]}

Martin, L. M. ^{[2
]}

Yu, P. ^{[1
]}

Seidel, J. ^{[3
]}

Ramesh, R. ^{[1
,3
]}

Orenstein, J. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 17期

关键词：

SPIN-WAVES; MAGNETIZATION; DYNAMICS; BEHAVIOR;

D O I：

10.1103/PhysRevLett.102.177601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of ferromagnetic resonance (FMR) in SrRuO3 using the time-resolved magneto-optical Kerr effect. The FMR oscillations in the time-domain appear in response to a sudden, optically induced change in the direction of easy-axis anisotropy. The high FMR frequency, 250 GHz, and large Gilbert damping parameter, alpha approximate to 1, are consistent with strong spin-orbit coupling. We find that the parameters associated with the magnetization dynamics, including alpha, have a nonmonotonic temperature dependence, suggestive of a link to the anomalous Hall effect.

引用

页数：4

共 26 条

[1] Imaging precessional motion of the magnetization vector [J].

Acremann, Y ;

Back, CH ;

Buess, M ;

Portmann, O ;

Vaterlaus, A ;

Pescia, D ;

Melchior, H .

SCIENCE, 2000, 290 (5491) :492-495

[2] Emission of spin waves by a magnetic multilayer traversed by a current [J].

Berger, L .

PHYSICAL REVIEW B, 1996, 54 (13) :9353-9358

[3] Ferromagnetic Anisotropy and the itinerant electron model [J].

Brooks, H .

PHYSICAL REVIEW, 1940, 58 (10) :909-918

[4]

Brown W. F., 1963, Micromagnetics

[5] The anomalous Hall effect and magnetic monopoles in momentum space [J].

Fang, Z ;

Nagaosa, N ;

Takahashi, KS ;

Asamitsu, A ;

Mathieu, R ;

Ogasawara, T ;

Yamada, H ;

Kawasaki, M ;

Tokura, Y ;

Terakura, K .

SCIENCE, 2003, 302 (5642) :92-95

[6] ULTRATHIN METALLIC MAGNETIC-FILMS - MAGNETIC ANISOTROPIES AND EXCHANGE INTERACTIONS [J].

HEINRICH, B ;

COCHRAN, JF .

ADVANCES IN PHYSICS, 1993, 42 (05) :523-639

[7] Direct observation of magnetic relaxation in a small permalloy disk by time-resolved scanning Kerr microscopy [J].

Hiebert, WK ;

Stankiewicz, A ;

Freeman, MR .

PHYSICAL REVIEW LETTERS, 1997, 79 (06) :1134-1137

[8] Modulated structure of the composite crystal [2CaOH]kCoO2 (k=0.576) [J].

Isobe, Masaaki ;

Onoda, Mitsuko ;

Shizuya, Mitsuyuki ;

Tanaka, Masahiko ;

Takayama-Muromachi, Eiji .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2007, 76 (01)

[9] FERROMAGNETIC RESONANCE IN IRON WHISKERS [J].

KAMBERSKY, V .

CANADIAN JOURNAL OF PHYSICS, 1970, 48 (09) :1103-+

[10] HALL EFFECT IN FERROMAGNETICS [J].

KARPLUS, R ;

LUTTINGER, JM .

PHYSICAL REVIEW, 1954, 95 (05) :1154-1160

← 1 2 3 →