2D scaling approach for the first order transition in Bi_2Sr_2CaCu_2O_{8+y}

TL;DR

This paper interprets recent experimental data on vortex phase transitions in Bi_2Sr_2CaCu_2O_{8+y} using a crossover from 3D to 2D scaling, explaining the failure of 3D models away from the transition temperature.

Contribution

It introduces a 2D scaling approach to analyze vortex phase transitions, highlighting a crossover from 3D to 2D behavior in layered superconductors.

Findings

Crossover from 3D to 2D scaling explains experimental observations.

Failure of 3D scaling is due to decoupled superconducting slabs.

Supports the 2D scaling approach for layered high-temperature superconductors.

Abstract

We analyze recent measurements by Ooi et al. of the angular dependence of the first order vortex phase transition in Bi_2Sr_2CaCu_2O_{8+y}. The experimental findings of these authors are interpreted in terms of a 2D versus 3D scaling approach. Invoking a crossover from a 3D to a 2D scaling approach, it shown, that the apparent failure of a 3D scaling approach away from the bulk transition temperature is due to a crossover to decoupled independent superconducting slabs.