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

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Zare Mohammad Hossein

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Journal: Iranian Journal of Physics Research Year:2020 | Volume:20 | Issue:1 Page(s): 147-155

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Title

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

Author(s)

Zare Mohammad Hossein | Issue Writer Certificate

Keywords

spin-orbit Mott insulatorQ1

unconventional superconductivityQ1

extended kitaev-heisenberg modelQ1

Abstract

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 K<0 and JH>0. However, the finite ferromagnetic off-diagonal exchange solely cannot generate the triplet pairing instabilities in competition with the antiferromagnetic-Heisenberg and-Kitaev exchanges.

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APA: Copy

Zare, Mohammad Hossein. (2020). Competition between spin-singlet and-triplet superconducting states in the doped extended Kitaev-Heisenberg model. IRANIAN JOURNAL OF PHYSICS RESEARCH, 20(1 ), 147-155. SID. https://sid.ir/paper/1701/en

Vancouver: Copy

Zare Mohammad Hossein. Competition between spin-singlet and-triplet superconducting states in the doped extended Kitaev-Heisenberg model. IRANIAN JOURNAL OF PHYSICS RESEARCH[Internet]. 2020;20(1 ):147-155. Available from: https://sid.ir/paper/1701/en

IEEE: Copy

Mohammad Hossein Zare, “Competition between spin-singlet and-triplet superconducting states in the doped extended Kitaev-Heisenberg model,” IRANIAN JOURNAL OF PHYSICS RESEARCH, vol. 20, no. 1 , pp. 147–155, 2020, [Online]. Available: https://sid.ir/paper/1701/en

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