Superconducting properties of tin-based ENZ and hyperbolic metamaterials
V. N. Smolyaninova, W. Korzi, W. Zimmerman, S. Searfoss, C. Jensen, G., Yong, D. Schaefer, J. C. Prestigiacomo, M. S. Osofsky, H. Kim, Z. Xing, M. M., Qazilbash, I. I. Smolyaninov
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.
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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