Tunable eigenmodes of coupled magnetic vortex oscillators

被引：25

作者：

Haenze, Max ^{[1
,2
]}

Adolff, Christian F. ^{[1
,2
]}

Weigand, Markus ^{[3
]}

Meier, Guido ^{[1
,2
,4
]}

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

[2] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany

[3] Max Planck Inst Intelligente Syst, D-70569 Stuttgart, Germany

[4] Hamburg Ctr Ultrafast Imaging, D-22761 Hamburg, Germany

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 18期

关键词：

Equations of motion - Iron alloys - Nickel alloys - Vortex flow;

D O I：

10.1063/1.4875618

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study the magnetization dynamics of coupled vortices in arrays of Permalloy disks via analytical calculations and scanning transmission x-ray microscopy. The Thiele approach is used to derive linear equations of motion of the vortices. Thereby, vortex motions following a nanosecond field pulse are described by a superposition of eigenmodes that depend on the vortex polarizations. Eigenmodes are calculated for a specific polarization pattern of a 3 x 3 vortex array. With magnetic field pulses distinct oscillations are excited and imaged in space and time. The calculated eigenmodes precisely describe the measured oscillations. (C) 2014 AIP Publishing LLC.

引用

页数：4

共 30 条

[1] Self-organized state formation in magnonic vortex crystals [J].

Adolff, Christian F. ;

Haenze, Max ;

Vogel, Andreas ;

Weigand, Markus ;

Martens, Michael ;

Meier, Guido .

PHYSICAL REVIEW B, 2013, 88 (22)

[2] Gyration mode splitting in magnetostatically coupled magnetic vortices in an array [J].

Barman, Anjan ;

Barman, Saswati ;

Kimura, T. ;

Fukuma, Y. ;

Otani, Y. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2010, 43 (42)

[3] 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

[4] Nonlinear magnetic vortex gyration [J].

Drews, Andre ;

Krueger, Benjamin ;

Selke, Gunnar ;

Kamionka, Thomas ;

Vogel, Andreas ;

Martens, Michael ;

Merkt, Ulrich ;

Moeller, Dietmar ;

Meier, Guido .

PHYSICAL REVIEW B, 2012, 85 (14)

[5] Collective modes for an array of magnetic dots in the vortex state [J].

Galkin, A. Yu. ;

Ivanov, B. A. ;

Zaspel, C. E. .

PHYSICAL REVIEW B, 2006, 74 (14)

[6] Eigenfrequencies of vortex state excitations in magnetic submicron-size disks [J].

Guslienko, KY ;

Ivanov, BA ;

Novosad, V ;

Otani, Y ;

Shima, H ;

Fukamichi, K .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8037-8039

[7] Wave modes of collective vortex gyration in dipolar-coupled-dot-array magnonic crystals [J].

Han, Dong-Soo ;

Vogel, Andreas ;

Jung, Hyunsung ;

Lee, Ki-Suk ;

Weigand, Markus ;

Stoll, Hermann ;

Schuetz, Gisela ;

Fischer, Peter ;

Meier, Guido ;

Kim, Sang-Koog .

SCIENTIFIC REPORTS, 2013, 3

[8] From chaos to selective ordering of vortex cores in interacting mesomagnets [J].

Jain, S. ;

Novosad, V. ;

Fradin, F. Y. ;

Pearson, J. E. ;

Tiberkevich, V. ;

Slavin, A. N. ;

Bader, S. D. .

NATURE COMMUNICATIONS, 2012, 3

[9] Tunable negligible-loss energy transfer between dipolar-coupled magnetic disks by stimulated vortex gyration [J].

Jung, Hyunsung ;

Lee, Ki-Suk ;

Jeong, Dae-Eun ;

Choi, Youn-Seok ;

Yu, Young-Sang ;

Han, Dong-Soo ;

Vogel, Andreas ;

Bocklage, Lars ;

Meier, Guido ;

Im, Mi-Young ;

Fischer, Peter ;

Kim, Sang-Koog .

SCIENTIFIC REPORTS, 2011, 1

[10] Micromagnetic computer simulations of spin waves in nanometre-scale patterned magnetic elements [J].

Kim, Sang-Koog .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2010, 43 (26)

← 1 2 3 →