Towards graded-index magnonics: Steering spin waves in magnonic networks

被引：118

作者：

Davies, C. S. ^{[1
]}

Francis, A. ^{[1
]}

Sadovnikov, A. V. ^{[2
,3
]}

Chertopalov, S. V. ^{[4
]}

Bryan, M. T. ^{[5
]}

Grishin, S. V. ^{[2
]}

Allwood, D. A. ^{[5
]}

Sharaevskii, Y. P. ^{[2
]}

Nikitov, S. A. ^{[2
,3
]}

Kruglyak, V. V. ^{[1
]}

机构：

[1] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England

[2] Saratov NG Chernyshevskii State Univ, Lab Metamat, Saratov 410012, Russia

[3] Russian Acad Sci, Kotelnikov Inst Radioengn & Elect, Moscow 125009, Russia

[4] Donetsk Natl Univ, UA-83001 Donetsk, Ukraine

[5] Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 02期

基金：

俄罗斯科学基金会; 英国工程与自然科学研究理事会;

关键词：

REFLECTION; BOUNDARY; SPECTRUM; FERRITE; FIELDS; FILMS;

D O I：

10.1103/PhysRevB.92.020408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnonics explores precessional excitations of ordered spins in magnetic materials-so-called spin waves-and their use as information and signal carriers within networks of magnonic waveguides. Here, we demonstrate that the nonuniformity of the internal magnetic field and magnetization inherent to magnetic structures creates a medium of graded refractive index for propagating magnetostatic waves and can be used to steer their propagation. The character of the nonuniformity can be tuned and potentially programmed using the applied magnetic field, which opens exciting prospects for the field of graded-index magnonics.

引用

页数：5

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