# Superconducting properties of tin-based ENZ and hyperbolic metamaterials

## TL;DR

This paper investigates how tin-based metamaterials with ENZ and hyperbolic configurations affect superconducting critical temperature, revealing size-dependent limitations related to the coherence length.

## Contribution

It provides experimental insights into the size-dependent superconducting properties of tin-based ENZ and hyperbolic metamaterials, highlighting the impact of structural dimensions.

## Key findings

- Tc enhancement diminishes when structural dimensions exceed 240nm
- Superconducting coherence length in tin is approximately 240nm
- Metamaterial geometry influences superconducting properties

## Abstract

Recent experiments have demonstrated that the superconducting critical temperature may be improved in various metamaterial superconductor geometries. Here, we present the results of a study of tin-based metamaterial superconductors in the epsilon-near-zero (ENZ) and hyperbolic metamaterial configurations. It was observed that Tc enhancement is significantly reduced when the metamaterial structural dimensions exceed 240nm, the superconducting coherence length in pure tin.

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Source: https://tomesphere.com/paper/1904.06182