Low Temperature Behavior of the Vortex Lattice in Unconventional Superconductors

TL;DR

This paper investigates how gap nodes in unconventional superconductors influence vortex lattice properties at very low temperatures, revealing measurable effects on lattice geometry and penetration depth.

Contribution

It introduces a detailed analysis of the nonlinear, nonlocal, and nonanalytic effects of gap nodes on vortex lattice behavior in high-temperature superconductors.

Findings

Altered vortex lattice geometry due to gap nodes

Measurable changes in effective penetration depth

Nonlinear, nonlocal effects at very low temperatures

Abstract

We study the effect of the superconducting gap nodes on the vortex lattice properties of high temperature superconductors at very low temperatures. The nonlinear, nonlocal and nonanalytic nature of this effect is shown to have measurable consequences for the vortex lattice geometry and the effective penetration depth in the mixed state as measured by muon-spin-rotation experiments.