Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling

Abstract In this paper, we present a Kane-Mele model in the presence of magnetic field and next nearest neighbors hopping amplitudes for investigations of the spin susceptibilities of Germanene layer. Green’s function approach has been implemented to find the behavior of dynamical spin susceptibilit...

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Autores principales:	Farshad Azizi, Hamed Rezania
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/468604c299764b9593f8be7863c9b694
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spelling	oai:doaj.org-article:468604c299764b9593f8be7863c9b6942021-12-02T14:20:34ZSpin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling10.1038/s41598-021-87268-x2045-2322https://doaj.org/article/468604c299764b9593f8be7863c9b6942021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87268-xhttps://doaj.org/toc/2045-2322Abstract In this paper, we present a Kane-Mele model in the presence of magnetic field and next nearest neighbors hopping amplitudes for investigations of the spin susceptibilities of Germanene layer. Green’s function approach has been implemented to find the behavior of dynamical spin susceptibilities of Germanene layer within linear response theoryand in the presence of magnetic field and spin-orbit coupling at finite temperature. Our results show the magnetic excitation mode for both longitudinal and transverse components of spin tends to higher frequencies with spin-orbit coupling strength. Moreover the frequency positions of sharp peaks in longitudinal dynamical spin susceptibility are not affected by variation of magnetic field while the peaks in transverse dynamical susceptibility moves to lower frequencies with magnetic field. The effects of electron doping on frequency behaviors of spin susceptibilities have been addressed in details. Finally the temperature dependence of static spin structure factors due to the effects of spin-orbit coupling, magnetic field and chemical potential has been studied.Farshad AziziHamed RezaniaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Farshad Azizi Hamed Rezania Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling
description	Abstract In this paper, we present a Kane-Mele model in the presence of magnetic field and next nearest neighbors hopping amplitudes for investigations of the spin susceptibilities of Germanene layer. Green’s function approach has been implemented to find the behavior of dynamical spin susceptibilities of Germanene layer within linear response theoryand in the presence of magnetic field and spin-orbit coupling at finite temperature. Our results show the magnetic excitation mode for both longitudinal and transverse components of spin tends to higher frequencies with spin-orbit coupling strength. Moreover the frequency positions of sharp peaks in longitudinal dynamical spin susceptibility are not affected by variation of magnetic field while the peaks in transverse dynamical susceptibility moves to lower frequencies with magnetic field. The effects of electron doping on frequency behaviors of spin susceptibilities have been addressed in details. Finally the temperature dependence of static spin structure factors due to the effects of spin-orbit coupling, magnetic field and chemical potential has been studied.
format	article
author	Farshad Azizi Hamed Rezania
author_facet	Farshad Azizi Hamed Rezania
author_sort	Farshad Azizi
title	Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling
title_short	Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling
title_full	Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling
title_fullStr	Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling
title_full_unstemmed	Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling
title_sort	spin structure factors of doped monolayer germanene in the presence of spin-orbit coupling
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/468604c299764b9593f8be7863c9b694
work_keys_str_mv	AT farshadazizi spinstructurefactorsofdopedmonolayergermaneneinthepresenceofspinorbitcoupling AT hamedrezania spinstructurefactorsofdopedmonolayergermaneneinthepresenceofspinorbitcoupling
_version_	1718391545056460800

Spin structure factors of doped monolayer Germanene in the presence of spin-orbit coupling

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