Polarization Selective Magnetic Vortex Dynamics and Core Reversal in Rotating Magnetic Fields

被引：133

作者：

Curcic, Michael ^{[1
]}

Van Waeyenberge, Bartel ^{[1
,2
]}

Vansteenkiste, Arne ^{[2
]}

Weigand, Markus ^{[1
]}

Sackmann, Vitalij ^{[1
]}

Stoll, Hermann ^{[1
]}

Faehnle, Manfred ^{[1
]}

Tyliszczak, Tolek ^{[3
]}

Woltersdorf, Georg ^{[4
]}

Back, Christian H. ^{[4
]}

Schuetz, Gisela ^{[1
]}

机构：

[1] Max Planck Inst Met Res, D-70569 Stuttgart, Germany

[2] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium

[3] LBNL, Adv Light Source, Berkeley, CA 94720 USA

[4] Univ Regensburg, Inst Expt & Angew Phys, D-93040 Regensburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.101.197204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the observation of magnetic vortex dynamics in response to rotating magnetic fields in submicron platelets. Unlike linear fields or spin polarized currents, which excite both vortex core polarization states, an in-plane rotating field can selectively excite one of the polarization states. We demonstrate by direct imaging with time-resolved scanning x-ray microscopy that the rotating field only excites the gyrotropic mode if the rotation sense of the field coincides with the vortex gyration sense and that such a field can selectively reverse the vortex polarization.

引用

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