Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg model

Recently, the extended Kitaev-Heisenberg model has been proposed to describe spin-orbital Mott insulators, such as iridate oxides and ruthenium chloride with honeycomb lattice. Using mean-field theory, we obtain the linear gap equations to find all possible superconducting phases in terms of differe...

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Bibliographic Details
Main Author:	Mohammad-Hossein Zare
Format:	Article
Language:	English
Published:	Isfahan University of Technology 2020-05-01
Series:	Iranian Journal of Physics Research
Subjects:	spin-orbit mott insulator unconventional superconductivity extended kitaev-heisenberg model
Online Access:	http://ijpr.iut.ac.ir/article_1603_de4b79bed2a15c34154d7a61e17acadd.pdf

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spelling	doaj-e3165bbb3a1e4a0ab4482cfb7dcc8a7c2020-11-28T12:49:40ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572345-36642020-05-0120114715510.47176/ijpr.20.1.210121603Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg modelMohammad-Hossein Zare0Department of Physics, Faculty of Science, Qom University of Technology, Qom, IranRecently, the extended Kitaev-Heisenberg model has been proposed to describe spin-orbital Mott insulators, such as iridate oxides and ruthenium chloride with honeycomb lattice. Using mean-field theory, we obtain the linear gap equations to find all possible superconducting phases in terms of different exchanges and doping levels. Our calculation based on the hole-doped model, in the presence of the off-diagonal exchange , shows the spin-triplet states can be stable in a larger area related to the doped Kitaev-Heisenberg model with K0. However, the finite ferromagnetic off-diagonal exchange solely cannot generate the triplet pairing instabilities in competition with the antiferromagnetic-Heisenberg and -Kitaev exchanges.http://ijpr.iut.ac.ir/article_1603_de4b79bed2a15c34154d7a61e17acadd.pdfspin-orbit mott insulatorunconventional superconductivityextended kitaev-heisenberg model
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Mohammad-Hossein Zare
spellingShingle	Mohammad-Hossein Zare Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg model Iranian Journal of Physics Research spin-orbit mott insulator unconventional superconductivity extended kitaev-heisenberg model
author_facet	Mohammad-Hossein Zare
author_sort	Mohammad-Hossein Zare
title	Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg model
title_short	Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg model
title_full	Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg model
title_fullStr	Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg model
title_full_unstemmed	Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg model
title_sort	competition between spin-singlet and -triplet superconducting states in the doped extended kitaev-heisenberg model
publisher	Isfahan University of Technology
series	Iranian Journal of Physics Research
issn	1682-6957 2345-3664
publishDate	2020-05-01
description	Recently, the extended Kitaev-Heisenberg model has been proposed to describe spin-orbital Mott insulators, such as iridate oxides and ruthenium chloride with honeycomb lattice. Using mean-field theory, we obtain the linear gap equations to find all possible superconducting phases in terms of different exchanges and doping levels. Our calculation based on the hole-doped model, in the presence of the off-diagonal exchange , shows the spin-triplet states can be stable in a larger area related to the doped Kitaev-Heisenberg model with K0. However, the finite ferromagnetic off-diagonal exchange solely cannot generate the triplet pairing instabilities in competition with the antiferromagnetic-Heisenberg and -Kitaev exchanges.
topic	spin-orbit mott insulator unconventional superconductivity extended kitaev-heisenberg model
url	http://ijpr.iut.ac.ir/article_1603_de4b79bed2a15c34154d7a61e17acadd.pdf
work_keys_str_mv	AT mohammadhosseinzare competitionbetweenspinsingletandtripletsuperconductingstatesinthedopedextendedkitaevheisenbergmodel
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Competition between spin-singlet and -triplet superconducting states in the doped extended Kitaev-Heisenberg model

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