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

Abstract

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
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 5; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2158-3226
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

Citation Formats

Qiu, Z., E-mail: qiuzy@imr.tohoku.ac.jp, Hou, D., Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577, Uruichi, M., Uchida, K., Institute for Materials Research, Tohoku University, Sendai 980-8577, PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Yamamoto, H. M., RIKEN, 2-1 Hirosawa, Wako 351-0198, Saitoh, E., Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577, Institute for Materials Research, Tohoku University, Sendai 980-8577, and Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195. Spin-current injection and detection in κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br. United States: N. p., 2015. Web. doi:10.1063/1.4922007.
Qiu, Z., E-mail: qiuzy@imr.tohoku.ac.jp, Hou, D., Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577, Uruichi, M., Uchida, K., Institute for Materials Research, Tohoku University, Sendai 980-8577, PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Yamamoto, H. M., RIKEN, 2-1 Hirosawa, Wako 351-0198, Saitoh, E., Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577, Institute for Materials Research, Tohoku University, Sendai 980-8577, & Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195. Spin-current injection and detection in κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br. United States. doi:10.1063/1.4922007.
Qiu, Z., E-mail: qiuzy@imr.tohoku.ac.jp, Hou, D., Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577, Uruichi, M., Uchida, K., Institute for Materials Research, Tohoku University, Sendai 980-8577, PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Yamamoto, H. M., RIKEN, 2-1 Hirosawa, Wako 351-0198, Saitoh, E., Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577, Institute for Materials Research, Tohoku University, Sendai 980-8577, and Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195. Fri . "Spin-current injection and detection in κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br". United States. doi:10.1063/1.4922007.
@article{osti_22488596,
title = {Spin-current injection and detection in κ-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br},
author = {Qiu, Z., E-mail: qiuzy@imr.tohoku.ac.jp and Hou, D. and Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577 and Uruichi, M. and Uchida, K. and Institute for Materials Research, Tohoku University, Sendai 980-8577 and PRESTO, Japan Science and Technology Agency, Saitama 332-0012 and Yamamoto, H. M. and RIKEN, 2-1 Hirosawa, Wako 351-0198 and Saitoh, E. and Spin Quantum Rectification Project, ERATO, Japan Science and Technology Agency, Aoba-ku, Sendai 980-8577 and Institute for Materials Research, Tohoku University, Sendai 980-8577 and Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195},
abstractNote = {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.},
doi = {10.1063/1.4922007},
journal = {AIP Advances},
issn = {2158-3226},
number = 5,
volume = 5,
place = {United States},
year = {2015},
month = {5}
}