Spin-current injection and detection in κ -(BEDT-TTF)2Cu[N(CN)2]Br

Z. Qiu, M. Uruichi, D. Hou, K. Uchida, H. M. Yamamoto, E. Saitoh

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Spin-current injection into an organic semiconductor κ-(BEDT-TTF)2Cu[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 κ-(BEDT-TTF)2Cu[N(CN)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)2Cu[N(CN)2]Br. We found that the voltage signal in the κ-(BEDT-TTF)2Cu[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.

Original languageEnglish
Article number057167
JournalAIP Advances
Volume5
Issue number5
DOIs
Publication statusPublished - 2015 May 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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