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Title: Intrinsic left-handed electromagnetic properties in anisotropic superconductors

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4982877· OSTI ID:1463475

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.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1463475
Report Number(s):
LA-UR-17-22274
Journal Information:
Applied Physics Letters, Vol. 110, Issue 17; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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