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Title: The phase accumulation and antenna near field of microscopic propagating spin wave devices

We studied phase accumulation by the highly non-reciprocal magnetostatic surface spin waves in thin Permalloy microstripes excited and received by microscopic coplanar antennae. We find that the experimentally measured characteristic length of the near field of the antenna is smaller than the total width of the coplanar. This is confirmed by our numerical simulations. Consequently, the distance over which the spin wave accumulates its phase while travelling between the input and output antennae coincides with the distance between the antennae symmetry axes with good accuracy.
Authors:
; ;  [1] ; ;  [2]
  1. School of Physics M013, The University of Western Australia, Crawley, WA 6009 (Australia)
  2. Department of Electrical and Computer Engineering, National University of Singapore, 117576 Singapore (Singapore)
Publication Date:
OSTI Identifier:
22280586
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTENNAS; COMPUTERIZED SIMULATION; DISTANCE; MAGNETIC MATERIALS; MAGNETISM; PERMALLOY; SPIN WAVES; SURFACES; SYMMETRY; WAVE PROPAGATION