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Title: Spin-current injection and detection in κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br

Spin-current injection into an organic semiconductor κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br film induced by the spin pumping from an yttrium iron garnet (YIG) film. When magnetization dynamics in the YIG film is excited by ferromagnetic or spin-wave resonance, a voltage signal was found to appear in the κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br film. Magnetic-field-angle dependence measurements indicate that the voltage signal is governed by the inverse spin Hall effect in κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br. We found that the voltage signal in the κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br/YIG system is critically suppressed around 80 K, around which magnetic and/or glass transitions occur, implying that the efficiency of the spin-current injection is suppressed by fluctuations which critically enhanced near the transitions.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [2] ;  [3] ;  [2] ;  [1] ;  [2] ;  [2] ;  [2]
  1. WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
  2. (Japan)
  3. Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, Okazaki 444-8585 (Japan)
  4. Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577 (Japan)
Publication Date:
OSTI Identifier:
22488596
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 5; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BEDT-TTF; CARBON NITRIDES; CYANIDES; DETECTION; EFFICIENCY; ELECTRIC POTENTIAL; FERRITE GARNETS; FILMS; HALL EFFECT; IRON OXIDES; MAGNETIC FIELDS; MAGNETIZATION; ORGANIC SEMICONDUCTORS; SIGNALS; SPIN; SPIN WAVES; YTTRIUM; YTTRIUM COMPOUNDS