Chiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet

Rectified electric current induced by irradiating light, a so-called photocurrent, is an established phenomenon in optoelectronic physics. In this paper, we present a comprehensive classification of the photocurrent response arising from the parity violation in bulk systems. We clarify the contrasti...

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Autores principales:	Hikaru Watanabe, Youichi Yanase
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/2087d7e1cb4a4904959af4d80f7a42b8
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spelling	oai:doaj.org-article:2087d7e1cb4a4904959af4d80f7a42b82021-12-02T13:27:27ZChiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet10.1103/PhysRevX.11.0110012160-3308https://doaj.org/article/2087d7e1cb4a4904959af4d80f7a42b82021-01-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.11.011001http://doi.org/10.1103/PhysRevX.11.011001https://doaj.org/toc/2160-3308Rectified electric current induced by irradiating light, a so-called photocurrent, is an established phenomenon in optoelectronic physics. In this paper, we present a comprehensive classification of the photocurrent response arising from the parity violation in bulk systems. We clarify the contrasting role of T and PT symmetries and consequently find new types of photocurrent phenomena characteristic of parity-violating magnets—the intrinsic Fermi surface effect and the gyration current. In particular, the gyration current is induced by circularly polarized light, and it is the counterpart of the shift current caused by linearly polarized light. This photocurrent adds a new functionality of materials studied in various fields of condensed matter physics such as multiferroics and spintronics. A list of materials is provided. Furthermore, we show that the gyration current is strongly enhanced by topologically nontrivial band dispersion. On the basis of the microscopic analysis of Dirac models, we demonstrate the divergent photocurrent response and elucidate the importance of the tilting of Dirac cones.Hikaru WatanabeYouichi YanaseAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 11, Iss 1, p 011001 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Hikaru Watanabe Youichi Yanase Chiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet
description	Rectified electric current induced by irradiating light, a so-called photocurrent, is an established phenomenon in optoelectronic physics. In this paper, we present a comprehensive classification of the photocurrent response arising from the parity violation in bulk systems. We clarify the contrasting role of T and PT symmetries and consequently find new types of photocurrent phenomena characteristic of parity-violating magnets—the intrinsic Fermi surface effect and the gyration current. In particular, the gyration current is induced by circularly polarized light, and it is the counterpart of the shift current caused by linearly polarized light. This photocurrent adds a new functionality of materials studied in various fields of condensed matter physics such as multiferroics and spintronics. A list of materials is provided. Furthermore, we show that the gyration current is strongly enhanced by topologically nontrivial band dispersion. On the basis of the microscopic analysis of Dirac models, we demonstrate the divergent photocurrent response and elucidate the importance of the tilting of Dirac cones.
format	article
author	Hikaru Watanabe Youichi Yanase
author_facet	Hikaru Watanabe Youichi Yanase
author_sort	Hikaru Watanabe
title	Chiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet
title_short	Chiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet
title_full	Chiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet
title_fullStr	Chiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet
title_full_unstemmed	Chiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet
title_sort	chiral photocurrent in parity-violating magnet and enhanced response in topological antiferromagnet
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/2087d7e1cb4a4904959af4d80f7a42b8
work_keys_str_mv	AT hikaruwatanabe chiralphotocurrentinparityviolatingmagnetandenhancedresponseintopologicalantiferromagnet AT youichiyanase chiralphotocurrentinparityviolatingmagnetandenhancedresponseintopologicalantiferromagnet
_version_	1718392961023082496

Chiral Photocurrent in Parity-Violating Magnet and Enhanced Response in Topological Antiferromagnet

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