Using metamaterial nanoengineering to triple the superconducting critical temperature of bulk aluminum.
| Autor: | Smolyaninova VN; Department of Physics Astronomy and Geosciences, Towson University, 8000 York Rd., Towson, MD 21252, USA., Zander K; Department of Physics Astronomy and Geosciences, Towson University, 8000 York Rd., Towson, MD 21252, USA., Gresock T; Department of Physics Astronomy and Geosciences, Towson University, 8000 York Rd., Towson, MD 21252, USA., Jensen C; Department of Physics Astronomy and Geosciences, Towson University, 8000 York Rd., Towson, MD 21252, USA., Prestigiacomo JC; Naval Research Laboratory, Washington, DC 20375, USA., Osofsky MS; Naval Research Laboratory, Washington, DC 20375, USA., Smolyaninov II; Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA. |
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| Jazyk: | angličtina |
| Zdroj: | Scientific reports [Sci Rep] 2015 Nov 02; Vol. 5, pp. 15777. Date of Electronic Publication: 2015 Nov 02. |
| DOI: | 10.1038/srep15777 |
| Abstrakt: | Recent experiments have shown the viability of the metamaterial approach to dielectric response engineering for enhancing the transition temperature, Tc, of a superconductor. In this report, we demonstrate the use of Al2O3-coated aluminium nanoparticles to form the recently proposed epsilon near zero (ENZ) core-shell metamaterial superconductor with a Tc that is three times that of pure aluminium. IR reflectivity measurements confirm the predicted metamaterial modification of the dielectric function thus demonstrating the efficacy of the ENZ metamaterial approach to Tc engineering. The developed technology enables efficient nanofabrication of bulk aluminium-based metamaterial superconductors. These results open up numerous new possibilities of considerable Tc increase in other simple superconductors. |
| Databáze: | MEDLINE |
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