Condensation of Hard-Core Pairs on a Lattice: A Model of the Superconducting State in Cuprates
Morten Holm Pedersen, Toni Schneider
TL;DR
This paper uses Monte Carlo simulations of the Bose Hubbard model to explore how pair concentration affects superconducting properties, supporting Bose condensation of hard-core pairs as the transition mechanism in cuprates.
Contribution
It demonstrates that Bose condensation of hard-core pairs on a lattice explains key superconducting properties in cuprates, aligning simulation results with experimental observations.
Findings
Transition temperature varies with pair concentration
Penetration depth behavior matches cuprate data
Specific heat singularity aligns with experimental results
Abstract
Using the Monte Carlo technique we study the dependence of transition temperature, penetration depth and specific heat singularity on the pair concentration in the Bose Hubbard model. We observe remarkable agreement with the corresponding properties of cuprates. This points uniquely to Bose condensation of hard-core pairs on a lattice as the mechanism that drives the transition.
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Theoretical and Computational Physics · High-pressure geophysics and materials