Adaptive superconductivity on a reconstructed Fermi surface

Voo, Khee-Kyun

doi:10.1016/j.physb.2017.07.070

Cited by 2 publications

(1 citation statement)

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“…It is interesting to make a comparison between the low doping t − J models in twodimensional honeycomb lattice and square lattice. The first to note is the contrasting phenomena where an AFM enhances the SC in a honeycomb lattice, but suppresses the SC in a square lattice [37]. The strength of a SC in a system may be understood by studying the DOS and the FS.…”

Section: Discussionmentioning

confidence: 99%

Antiferromagnetism and chiral-d wave superconductivity in a honeycomb lattice close to Mott state

Ho¹,

Voo²

2022

Preprint

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The antiferromagnetism (AFM) and chiral-d wave superconductivity (SC) in a honeycomb lattice close to an antiferromagnetic (AF) Mott state at half band filling are studied with a t − J model and slave boson mean field theory. The order parameters and single particle dispersion relations at different band filling fractions are investigated. It is found that the AFM enhances the SC, and leads to nodal single particle dispersion relations at two band filling fractions. These unexpected nodal dispersion relations out of nodeless chiral-d wave superconducting order are discussed. A comparison between AF chiral-d wave states and AF extended-s wave states is also given to highlight the pertinent features in chiral-d wave superconducting states. This study may be related to the honeycomb lattice materials such as the In 3 Cu 2 VO 9 compound.

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Section: Discussionmentioning

confidence: 99%