Experimental demonstration of superconducting critical temperature increase in electromagnetic metamaterials

Vera N Smolyaninova; Bradley Yost; Kathryn Zander; M S Osofsky; Heungsoo Kim; Shanta Saha; R L Greene; Igor I Smolyaninov

doi:10.1038/srep07321

Experimental demonstration of superconducting critical temperature increase in electromagnetic metamaterials

Sci Rep. 2014 Dec 4:4:7321. doi: 10.1038/srep07321.

Authors

Vera N Smolyaninova¹, Bradley Yost¹, Kathryn Zander¹, M S Osofsky², Heungsoo Kim², Shanta Saha³, R L Greene³, Igor I Smolyaninov⁴

Affiliations

¹ Department of Physics Astronomy and Geosciences, Towson University, 8000 York Rd., Towson, MD 21252, USA.
² Naval Research Laboratory, Washington, DC 20375, USA.
³ Department of Physics, Center for Nanophysics &Advanced Materials, University of Maryland, College Park, MD 20742, USA.
⁴ Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA.

Abstract

A recent proposal that the metamaterial approach to dielectric response engineering may increase the critical temperature of a composite superconductor-dielectric metamaterial has been tested in experiments with compressed mixtures of tin and barium titanate nanoparticles of varying composition. An increase of the critical temperature of the order of ΔT ~ 0.15 K compared to bulk tin has been observed for 40% volume fraction of barium titanate nanoparticles. Similar results were also obtained with compressed mixtures of tin and strontium titanate nanoparticles.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.