Resonant transparency of a layered superconductor: Hyperbolic material in the terahertz range tuned by dc magnetic field

N. Kvitka; S. S. Apostolov; N. M. Makarov; T. Rokhmanova; A. A. Shmat'ko; V. A. Yampol'skii

doi:10.1103/PhysRevB.103.104512

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Resonant transparency of a layered superconductor: Hyperbolic material in the terahertz range tuned by dc magnetic field

N. Kvitka, S. S. Apostolov, N. M. Makarov, T. Rokhmanova, A. A. Shmat'ko, V. A. Yampol'skii

DOI 10.1103/PhysRevB.103.104512 · Physical Review B

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Abstract

We show that layered superconductors, due to their peculiar nonlinear response to a weak dc magnetic field, behave as tunable hyperbolic media within a wide terahertz range. Thereby, various attractive phenomena intrinsic in hyperbolic materials can be controlled by dc magnetic field. In particular, in this work a resonant transparency of a layered superconductor induced by the excitation of localized waves with nonmonotonic dispersion, is studied. We reveal the dc magnetic field is able to adjust the electromagnetic properties of a layered superconductor in order to observe specific twin peaks in the transmittance-vs-angle dependence. In addition, solving the problem by the transfer-matrix method, we succeed in deriving the matrix responsible for the effect of dc magnetic field. It is notable that this specific matrix depends neither on the size of the layered superconductor, nor on the parameters of surroundings.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-δSrδCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-δBaδCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown