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Spin-current injection and detection in $$kappa$$-(BEDT-TTF)$$_{2}$$Cu[N(CN)$$_{2}$$]Br

Qiu, Z.*; Uruichi, Mikio*; Hou, D.*; Uchida, Kenichi*; Yamamoto, Hiroshi*; Saito, Eiji

Spin-current injection into an organic semiconductor $$kappa$$-(BEDT-TTF)$$_{2}$$Cu[N(CN)$$_{2}$$]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 $$kappa$$-(BEDT-TTF)$$_{2}$$Cu[N(CN)$$_{2}$$]Br film. Magnetic-field-angle dependence measurements indicate that the voltage signal is governed by the inverse spin Hall effect in $$kappa$$-(BEDT-TTF)$$_{2}$$Cu[N(CN)$$_{2}$$]Br. We found that the voltage signal in the $$kappa$$-(BEDT-TTF)$$_{2}$$Cu[N(CN)$$_{2}$$]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.

Language

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English

Journal

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AIP Advances (Internet)

Volume

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5

Number

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5

Pages

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p.057167_1 - 057167_7

Publication Year/Month

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2015/05

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Held date

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Patent information

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Paper URL

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https://doi.org/10.1063/1.4922007

DOI for research data

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Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:54.54

Category:Nanoscience & Nanotechnology

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