期刊
APPLIED PHYSICS LETTERS
卷 103, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4819435
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资金
- NSF of the USA [DMR-1015175]
- U.S. Army TARDEC, RDECOM
- DARPA MTO/MESO Grant [N66001-11-1-4114]
- CNFD grant from the Semiconductor Research Corporation
- MES of Ukraine [M/90-2010]
- SFFR (DFFD) of Ukraine [UU34/008]
It is demonstrated that collective spin waves (SWs) propagating in complex periodic arrays of dipolarly coupled magnetic nanopillars existing in a saturated (single-domain) ground state in a zero bias magnetic field could be nonreciprocal. To guarantee the SW nonreciprocity, two conditions should be fulfilled: (i) existence of a nonzero out-of-plane component of the pillars' static magnetization and (ii) a complex periodicity of array's ground state with at least two elements per a primitive cell, if the elements are different, and at least three elements per a primitive cell, if the elements are identical. (C) 2013 AIP Publishing LLC.
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