Bragg diffraction of spin waves from a two-dimensional antidot lattice

被引：69

作者：

Zivieri, R. ^{[1
,2
]}

Tacchi, S. ^{[3
,4
]}

Montoncello, F. ^{[1
,2
]}

Giovannini, L. ^{[1
,2
]}

Nizzoli, F. ^{[1
,2
]}

Madami, M. ^{[3
,4
]}

Gubbiotti, G. ^{[3
,4
,5
]}

Carlotti, G. ^{[3
,4
]}

Neusser, S. ^{[6
]}

Duerr, G. ^{[6
]}

Grundler, D. ^{[6
]}

机构：

[1] Univ Ferrara, Consorzio Nazl Interuniv Sci Fis Mat CNISM Unita, I-44122 Ferrara, Italy

[2] Univ Ferrara, Dipartimento Fis, I-44122 Ferrara, Italy

[3] Univ Perugia, Consorzio Nazl Interuniv Sci Fis Mat CNISM Unita, I-06123 Perugia, Italy

[4] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy

[5] CNR IOM, Unita Perugia, Dipartimento Fis, I-06123 Perugia, Italy

[6] Tech Univ Munich, Dept Phys, Lehrstuhl Phys Funktionaler Schichtsyst, D-85747 Garching, Germany

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 01期

关键词：

MODES;

D O I：

10.1103/PhysRevB.85.012403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The spin-wave band structure of a two-dimensional square array of NiFe circular antidots (hole diameter 120 nm, periodicity 800 nm) is investigated. Brillouin light scattering experiments and band structure calculations, carried out by means of the dynamical matrix method, provide evidence for either extended or localized magnonic modes. Both families exhibit band gaps at Brillouin zone boundaries, attributed to Bragg reflection. Their calculated magnitude agrees with the one obtained by using an analytical model that takes into account the periodic variation of the internal field. This is in contrast to antidots in photonics and electronics, where the back-reflection is directly caused by the presence of holes. The results are important for advancing research on nanostructured two-dimensional magnonic crystals.

引用

页数：6

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