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所属单位：[1]Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA;[2]MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA;[3]Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China;[4]Univ Lyon, Univ St Etienne, LT2C, F-42000 St Etienne, France

发表刊物：APPLIED PHYSICS LETTERS

关键字：Yttrium iron garnet - Nickel alloys - Iron alloys - Magnetostatics

摘要：An analytical expression for the amplitudes of magnetostatic surface spin waves (MSSWs) propagating in opposite directions at a magnetic film surface is presented. This shows that for a given magnetic field H, it is forbidden for an independent MSSW to propagate along the direction of -(H) over right arrow x (n) over right arrow , where (n) over right arrow is the surface normal. This unidirectional propagation property is confirmed by experiments with both permalloy and yttrium iron garnet films of different film thicknesses, and has implications in the design of spin-wave devices such as isolators and spin-wave diodes. (C) 2014 AIP Publishing LLC.

文献类型：Article

卷号：105

期号：23

ISSN号：0003-6951

是否译文：否