Quantitative Determination of the Nonlinear Pinning Potential for a Magnetic Domain Wall

被引：48

作者：

Bedau, D. ^{[1
]}

Klaeui, M. ^{[1
]}

Hua, M. T. ^{[1
]}

Krzyk, S. ^{[1
]}

Ruediger, U. ^{[1
]}

Faini, G. ^{[2
]}

Vila, L. ^{[2
]}

机构：

[1] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

[2] CNRS, Phynano team, Lab Photon & Nanostruct, F-91460 Marcoussis, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.101.256602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using microwave currents, we excite resonances of geometrically confined pinned domain walls, detecting the resonance by the rectification of the microwave current. By applying magnetic fields, the resonance frequency of the domain wall oscillator can be tuned over a wide range. Increasing the power leads to a redshift due to the nonlinearity of the system. From this frequency shift, we directly deduce the quantitative shape of the potential, so that a complete characterization of the pinning potential is obtained.

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页数：4

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