Effect of metamaterial engineering on the superconductive properties of ultrathin layers of NbTiN

Smolyaninova, Vera N.; Korzi, William; Yong, Grace; Valente-Feliciano, Anne-Marie; Beverstock, David R.; Prestigiacomo, Joseph C.; Osofsky, Michael S.; Smolyaninov, Igor I.

doi:10.1063/5.0057663

Effect of metamaterial engineering on the superconductive properties of ultrathin layers of NbTiN

Journal Article · Tue Aug 17 00:00:00 EDT 2021 · Journal of Applied Physics

DOI:https://doi.org/10.1063/5.0057663· OSTI ID:1819087

^[1]; Korzi, William ^[1]; Yong, Grace ^[1]; ^[2]; Beverstock, David R. ^[3]; Prestigiacomo, Joseph C. ^[4]; Osofsky, Michael S. ^[5]; Smolyaninov, Igor I. ^[6]

Towson University, MD (United States)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); College of William and Mary, Williamsburg, VA (United States)
College of William and Mary, Williamsburg, VA (United States)
Naval Research Lab. (NRL), Washington, DC (United States)
Univ. of Maryland, College Park, MD (United States); Saltenna LLC, McLean, VA (United States)

The electronic transport and optical properties of high quality multilayers of NbTiN/AlN with ultrathin NbTiN layers were characterized. The anisotropy of the dielectric function of the multilayers confirmed their hyperbolic metamaterial properties. Here, the superconductive transition temperature, T_c, of these engineered superconductors was enhanced up to 32% compared to the T_c of a single ultrathin NbTiN layer while the resistivity per NbTiN layer remained unchanged. We have demonstrated that this T_c increase can be attributed to enhanced electron–electron interaction in superconducting hyperbolic metamaterials. The measured critical fields are high and have an anomalous temperature dependence on the direction perpendicular to the magnetic field. These results demonstrate that the metamaterial engineering approach can be used to enhance H_c2.

View Accepted Manuscript (DOE)

Research Organization:: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

Sponsoring Organization:: Defense Advanced Research Projects Agency (DARPA); US Department of the Navy, Office of Naval Research (ONR); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 1819087

Report Number(s):: DOE/OR/23177-5202; JLAB-ACC--21-3380; W911NF-17-1-0348; N0001418-1-2681; N0001418WX00078; and N00014-18-1-2653; Naval Research Laboratory base program

Journal Information:: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 7 Vol. 130; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Effect of metamaterial engineering on the superconductive properties of ultrathin layers of NbTiN

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