文章基本信息

标题：Using metamaterial nanoengineering to triple the superconducting critical temperature of bulk aluminum
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作者：Vera N. Smolyaninova ; Kathryn Zander ; Thomas Gresock 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
期号：1
DOI：10.1038/srep15777
语种：English
出版社：Springer Nature
摘要：Recent experiments have shown the viability of the metamaterial approach to dielectric response engineering for enhancing the transition temperature, T_c, 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 T_c 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 T_c 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.