Magnetic Field Effect on the Pseudogap Temperature within Precursor Superconductivity

TL;DR

This paper investigates how magnetic fields influence the pseudogap temperature in cuprate superconductors, supporting the idea that the pseudogap originates from precursor superconductivity through detailed theoretical modeling.

Contribution

It provides a theoretical analysis using an anisotropic Hubbard model to explain the magnetic field dependence of the pseudogap temperature, aligning with experimental observations.

Findings

Magnetic field dependence of T* matches experimental data

Supports superconducting origin of the pseudogap

Explains weak initial T* dependence at low fields

Abstract

We determine the magnetic field dependence of the pseudogap closing temperature T* within a precursor superconductivity scenario. Detailed calculations with an anisotropic attractive Hubbard model account for a recently determined experimental relation in BSCCO between the pseudogap closing field and the pseudogap temperature at zero field, as well as for the weak initial dependence of T* at low fields. Our results indicate that the available experimental data are fully compatible with a superconducting origin of the pseudogap in cuprate superconductors.