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Title: Intrinsic left-handed electromagnetic properties in anisotropic superconductors

Abstract

Left-handed materials usually are realized in artificial subwavelength structures. In this, we show that some anisotropic superconductors such as Bi2Sr2CaCu2O8+δ, YBa2CuxOy, and La2-xSrxCuO4, are intrinsic left-handed materials. The condition is that the plasma frequency in the c axis, ωc, and in the ab plane, ωab, and the operating angular frequency, ω, satisfy ωc < ω < ωab. In addition, ω should be smaller than the superconducting energy gap to sustain superconductivity. We study the reflection and transmission of electromagnetic waves and reveal negative refraction and the backward wave with the phase velocity opposite to the direction of energy flux propagation. We also discuss possible approaches for improvement, making these properties feasible for experimental validation. Being intrinsic left-hand materials, the anisotropic superconductors are promising for applications in functional electromagnetic devices in the terahertz frequency band.

Authors:
ORCiD logo [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1463475
Report Number(s):
LA-UR-17-22274
Journal ID: ISSN 0003-6951
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 17; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; left handed materials; negative index materials; superconductors; superlattices; band gap; plasma waves; dielectric constant; anisotropy; magnetic anisotropy

Citation Formats

Lin, Shi-Zeng, and Chen, Hou-Tong. Intrinsic left-handed electromagnetic properties in anisotropic superconductors. United States: N. p., 2017. Web. doi:10.1063/1.4982877.
Lin, Shi-Zeng, & Chen, Hou-Tong. Intrinsic left-handed electromagnetic properties in anisotropic superconductors. United States. https://doi.org/10.1063/1.4982877
Lin, Shi-Zeng, and Chen, Hou-Tong. Thu . "Intrinsic left-handed electromagnetic properties in anisotropic superconductors". United States. https://doi.org/10.1063/1.4982877. https://www.osti.gov/servlets/purl/1463475.
@article{osti_1463475,
title = {Intrinsic left-handed electromagnetic properties in anisotropic superconductors},
author = {Lin, Shi-Zeng and Chen, Hou-Tong},
abstractNote = {Left-handed materials usually are realized in artificial subwavelength structures. In this, we show that some anisotropic superconductors such as Bi2Sr2CaCu2O8+δ, YBa2CuxOy, and La2-xSrxCuO4, are intrinsic left-handed materials. The condition is that the plasma frequency in the c axis, ωc, and in the ab plane, ωab, and the operating angular frequency, ω, satisfy ωc < ω < ωab. In addition, ω should be smaller than the superconducting energy gap to sustain superconductivity. We study the reflection and transmission of electromagnetic waves and reveal negative refraction and the backward wave with the phase velocity opposite to the direction of energy flux propagation. We also discuss possible approaches for improvement, making these properties feasible for experimental validation. Being intrinsic left-hand materials, the anisotropic superconductors are promising for applications in functional electromagnetic devices in the terahertz frequency band.},
doi = {10.1063/1.4982877},
journal = {Applied Physics Letters},
number = 17,
volume = 110,
place = {United States},
year = {Thu Apr 27 00:00:00 EDT 2017},
month = {Thu Apr 27 00:00:00 EDT 2017}
}

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