Spin Current Generation In Organic Antiferromagnets

Makoto Naka, Satoru Hayami, Hiroaki Kusunose, Yuki Yanagi, Yukitoshi Motome, Hitoshi Seo

Research output: Contribution to journalArticlepeer-review

Abstract

Spin current–a flow of electron spins without a charge current–is an ideal information carrier free from Joule heating for electronic devices. The celebrated spin Hall effect1,2, which arises from the relativistic spin-orbit coupling, enables us to generate and detect spin currents in inorganic materials and semiconductors3–6, taking advantage of their constituent heavy atoms. In contrast, organic materials consisting of molecules with light elements have been believed to be unsuited for spin current generation. Here we show that a class of organic antiferromagnets with checker-plate type molecular arrangements can serve as a spin current generator by applying a thermal gradient or an electric field, even with vanishing spin-orbit coupling. Our findings provide another route to create a spin current distinct from the conventional spin Hall effect and open a new field of spintronics based on organic magnets having advantages of small spin scattering and long lifetime.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2019 Feb 7

ASJC Scopus subject areas

  • General

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