Spin transport in antiferromagnetic insulators

doi:10.1088/1674-1056/28/8/088504

Abstract Electrical spin, which is the key element of spintronics, has been regarded as a powerful substitute for the electrical charge in the next generation of information technology, in which spin plays the role of the carrier of information and/or energy in a similar way to the electrical charge in electronics. Spin-transport phenomena in different materials are central topics of spintronics. Unlike electrical charge, spin transport does not depend on electron motion, particularly spin can be transported in insulators without accompanying Joule heating. Therefore, insulators are considered to be ideal materials for spin conductors, in which magnetic insulators are the most compelling systems. Recently, we experimentally studied and theoretically discussed spin transport in various antiferromagnetic systems and identified spin susceptibility and the Néel vector as the most important factors for spin transport in antiferromagnetic systems. Herein, we summarize our experimental results, physical nature, and puzzles unknown. Further challenges and potential applications are also discussed.

Keywords: spintronics spin wave antiferromagnetics spin transport

Received: 15 March 2019
Revised: 09 June 2019
Accepted manuscript online:

PACS:	85.75.-d	(Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields)
	76.50.+g	(Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)
	75.50.Ee	(Antiferromagnetics)
	75.76.+j	(Spin transport effects)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11874098), LiaoNing Revitalization Talents Program (Grant No. XLYC1807156), and the Fundamental Research Funds for the Central Universities (Grant No. DUT17RC(3)073).

Corresponding Authors: Zhiyong Qiu
E-mail: qiuzy@dlut.edu.cn

Cite this article:

Zhiyong Qiu(邱志勇), Dazhi Hou(侯达之) Spin transport in antiferromagnetic insulators 2019 Chin. Phys. B 28 088504

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