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Title: Generation of spin currents in the skyrmion phase of a helimagnetic insulator Cu{sub 2}OSeO{sub 3}

We report spin-current generation related to skyrmion dynamics resonantly excited by a microwave in a helimagnetic insulator Cu{sub 2}OSeO{sub 3}. A Pt layer was fabricated on Cu{sub 2}OSeO{sub 3} and voltage in the Pt layer was measured upon magnetic upon magnetic resonance of Cu{sub 2}OSeO{sub 3} to electrically detect injected spin currents via the inverse spin Hall effect (ISHE) in Pt. We found that ISHE-induced electromotive forces appear in the skyrmion phase of Cu{sub 2}OSeO{sub 3} as well as in the ferrimagnetic phase, which shows that magnetic skyrmions can contribute to the spin pumping effect.
Authors:
;  [1] ; ;  [2] ;  [1] ;  [3] ;  [3] ;  [3]
  1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
  2. Department of Physics, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274-8510 (Japan)
  3. (Japan)
Publication Date:
OSTI Identifier:
22413037
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 5; Other Information: (c) 2015 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; COPPER OXIDES; DIELECTRIC MATERIALS; ELECTRIC POTENTIAL; ELECTROMOTIVE FORCE; FERRIMAGNETIC MATERIALS; FERRIMAGNETISM; HALL EFFECT; LAYERS; MAGNETIC RESONANCE; MICROWAVE RADIATION; PLATINUM; SELENATES; SKYRME POTENTIAL; SOLITONS; SPIN