Localized Defect Modes in a Two-Dimensional Array of Magnetic Nanodots

被引：4

作者：

Verba, Roman ^{[1
]}

Tiberkevich, Vasil ^{[2
]}

Bankowski, Elena ^{[3
]}

Meitzler, Thomas ^{[3
]}

Melkov, Gennadiy ^{[1
]}

Slavin, Andrei ^{[2
]}

机构：

[1] Taras Shevchenko Natl Univ Kyiv, Fac Radiophys, UA-01601 Kiev, Ukraine

[2] Oakland Univ, Dept Phys, Rochester, MI 48309 USA

[3] US Army TARDEC, Warren, MI 48397 USA

来源：

IEEE MAGNETICS LETTERS | 2013年 / 4卷

基金：

美国国家科学基金会;

关键词：

Nanomagnetics; spin waves; magnonic crystal; magnetic dot; ferromagnetic resonance;

D O I：

10.1109/LMAG.2013.2277995

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The microwave properties of an array of magnetic nanodots in a ferromagnetic state having a point defect-a dot with inverted magnetization or different material parameters-are considered. The existence of a single-point defect in a dot array may lead to the appearance of several localized modes: one "defect eigenmode" and several "well modes," the number and structure of which strongly depend on the magnetostatic interactions between the dots. By performing a ferromagnetic resonance experiment on an array of magnetic dots containing a small number of defects, it is possible to obtain information about the entire spin-wave spectrum of the array.

引用

页数：4

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