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Title: Influence of interfacial Dzyaloshinskii-Moriya interaction on the parametric amplification of spin waves

The influence of the interfacial Dzyaloshinskii-Moriya interaction (IDMI) on the parametric amplification of spin waves propagating in ultrathin ferromagnetic film is considered theoretically. It is shown that the IDMI changes the relation between the group velocities of the signal and idler spin waves in a parametric amplifier, which may result in the complete vanishing of the reversed idler wave. In the optimized case, the idler spin wave does not propagate from the pumping region at all, which increases the efficiency of the amplification of the signal wave and suppresses the spurious impact of the idler waves on neighboring spin-wave processing devices.
Authors:
 [1] ; ;  [2]
  1. Institute of Magnetism, National Academy of Sciences of Ukraine, Kyiv 03142 (Ukraine)
  2. Department of Physics, Oakland University, Rochester, Michigan 48309 (United States)
Publication Date:
OSTI Identifier:
22482087
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLIFICATION; EFFICIENCY; FILMS; PARAMETRIC AMPLIFIERS; SIGNALS; SPIN WAVES; VELOCITY