Driven dynamic mode splitting of the magnetic vortex translational resonance

被引：49

作者：

Buchanan, K. S. ^{[1
]}

Grimsditch, M. ^{[2
]}

Fradin, F. Y. ^{[2
]}

Bader, S. D. ^{[1
,2
]}

Novosad, V. ^{[2
]}

机构：

[1] Argonne Natl Lab, Ctr Nanosclae Mat, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.99.267201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A magnetic vortex in a restricted geometry possesses a nondegenerate translational excitation that corresponds to circular motion of its core at a characteristic frequency. For 40-nm thick, micron-sized permalloy elements, we find that the translational-mode microwave absorption peak splits into two peaks that differ in frequency by up to 25% as the driving field is increased. An analysis of micromagnetic equations shows that for large driving fields two stable solutions emerge.

引用

页数：4

共 35 条

[1] Observation of spatiotemporal self-focusing of spin waves in magnetic films [J].

Bauer, M ;

Buttner, O ;

Demokritov, SO ;

Hillebrands, B ;

Grimalsky, V ;

Rapoport, Y ;

Slavin, AN .

PHYSICAL REVIEW LETTERS, 1998, 81 (17) :3769-3772

[2] RELAXATION EFFECTS IN PARA-MAGNETIC AND FERROMAGNETIC RESONANCE [J].

BLOEMBERGEN, N ;

WANG, S .

PHYSICAL REVIEW, 1954, 93 (01) :72-83

[3]

BOYD RW, 2002, NONLINEAR OPTICS, P576

[4] Magnetic-field tunability of the vortex translational mode in micron-sized permalloy ellipses: Experiment and micromagnetic modeling [J].

Buchanan, K. S. ;

Roy, P. E. ;

Grimsditch, M. ;

Fradin, F. Y. ;

Guslienko, K. Yu. ;

Bader, S. D. ;

Novosad, V. .

PHYSICAL REVIEW B, 2006, 74 (06)

[5] Soliton-pair dynamics in patterned ferromagnetic ellipses [J].

Buchanan, KS ;

Roy, PE ;

Grimsditch, M ;

Fradin, FY ;

Guslienko, KY ;

Bader, SD ;

Novosad, V .

NATURE PHYSICS, 2005, 1 (03) :172-176

[6] Fourier transform imaging of spin vortex eigenmodes -: art. no. 077207 [J].

Buess, M ;

Höllinger, R ;

Haug, T ;

Perzlmaier, K ;

Krey, U ;

Pescia, D ;

Scheinfein, MR ;

Weiss, D ;

Back, CH .

PHYSICAL REVIEW LETTERS, 2004, 93 (07) :077207-1

[7] Vortex core-driven magnetization dynamics [J].

Choe, SB ;

Acremann, Y ;

Scholl, A ;

Bauer, A ;

Doran, A ;

Stöhr, J ;

Padmore, HA .

SCIENCE, 2004, 304 (5669) :420-422

[8] Single-domain circular nanomagnets [J].

Cowburn, RP ;

Koltsov, DK ;

Adeyeye, AO ;

Welland, ME ;

Tricker, DM .

PHYSICAL REVIEW LETTERS, 1999, 83 (05) :1042-1045

[9] RELAXATION EFFECTS IN THE FERROMAGNETIC RESONANCE [J].

DAMON, RW .

REVIEWS OF MODERN PHYSICS, 1953, 25 (01) :239-245

[10] Experimental observation of symmetry-breaking nonlinear modes in an active ring [J].

Demokritov, SO ;

Serga, AA ;

Demidov, VE ;

Hillebrands, B ;

Kostylev, MP ;

Kalinikos, BA .

NATURE, 2003, 426 (6963) :159-162

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