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Nonreciprocal spin-wave propagation in YIG/GGG: a limit on the DMI parameter

Journal Article · · Journal of the Korean Physical Society
 [1];  [2];  [3];  [4]
  1. Northwestern University, Evanston, IL (United States); Intel Corporation, Hillsboro, OR (United States); Northwestdern
  2. Northwestern University, Evanston, IL (United States); University of Illinois Urbana-Champaign, IL (United States)
  3. Northwestern University, Evanston, IL (United States)
  4. Korea University of Technology and Education, Cheonan (Korea)
Materials with low damping, such as Yttrium Iron Garnet (YIG), are of interest in connection with spintronic devices. A promising structure for information storage is the Skyrmion, a domain wall quasi-particle. It has been shown that the stabilization of a Skyrmion can be energetically favorable with the addition of spin-orbit coupling (SOC) through the Dzyaloshinsky-Moriya Interaction (DMI). This interaction should be largest in metals, but still present in insulators. In order to produce spintronic devices using YIG, we must evaluate the DMI interaction inherent in the substrate used to grow the YIG, which is generally Gadolinium Gallium Garnet (GGG). In this study, we measure nonreciprocal spin wave propagation in a thick YIG film in order to place a limit on the DMI parameter in a YIG/GGG bilayer.
Research Organization:
Northwestern Univ., Evanston, IL (United States); Northwestern University, Evanston, IL (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0014424
OSTI ID:
2156223
Alternate ID(s):
OSTI ID: 2308897
OSTI ID: 2309717
Journal Information:
Journal of the Korean Physical Society, Journal Name: Journal of the Korean Physical Society Journal Issue: 4 Vol. 83; ISSN 0374-4884
Publisher:
Korean Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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