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Related Experiment Video

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Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

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Published on: July 8, 2021

Do superconductors change as fast as possible when quenched?

Ray Rivers¹, Roberto Monaco, Jesper Mygind

¹Blackett Laboratory, Imperial College London, London, UK. r.rivers@imperial.ac.uk

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences

|June 10, 2008

Summary

Superconductors transitioning rapidly are bound by causality, influencing their initial structure. This study shows Josephson junctions exhibit this, linking causal bounds to the Gaussian nature of the order parameter.

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Area of Science:

Condensed matter physics
Quantum mechanics

Background:

Superconductors exhibit phase transitions, altering their properties.
Causality plays a role in the dynamics of these transitions.
Josephson junctions are key systems for studying superconducting phenomena.

Purpose of the Study:

To investigate the causal constraints on domain structure during rapid superconducting phase transitions.
To explore the role of the order parameter's Gaussian nature in these causal bounds.
To demonstrate these principles using Josephson junctions.

Main Methods:

Theoretical analysis of phase transitions in superconductors.
Investigating the properties of the order parameter.
Observational or experimental validation using Josephson junctions (implied).

Main Results:

Rapid superconducting phase transitions impose causal constraints on the initial domain structure.
Josephson junctions exhibit behavior consistent with these causal bounds.
The Gaussian nature of the order parameter is identified as the origin of these causal bounds.

Conclusions:

Causality fundamentally limits the domain structure during fast superconducting phase transitions.
The Gaussian nature of the order parameter is a critical factor in establishing these causal limits.
Josephson junctions serve as a practical example of these theoretical constraints.