Vortex lines in the high-Tc superconductivity in presence of lattice distortions

TL;DR

This paper explores how lattice distortions in high-Tc superconductors influence vortex structures and the competition between s- and d-wave symmetries, using a lattice model and Ginzburg-Landau analysis.

Contribution

It introduces a model linking lattice distortions to superconducting symmetry competition and vortex structures in high-Tc materials.

Findings

Distortions lock the lattice and affect superconducting symmetry.

Vortex structures differ between s- and d-wave states.

Lattice distortions induce competing superconducting orders.

Abstract

We investigate the superconducting states of the high-Tc superconductors which we argue to be commensurately locked by the tilted rigid octahedral distortion. The method is based on the analysis of the kinematics of the rigid-octahedra lattice model. The distortion modes cause the competing superconducting state of the "s" and "d" type symmetry. The vortex structure of the competing orders is analysed on the ground of the Ginzburg-Landau model.