Emitted spectra of electromagnetic waves from a tunnel-injected nonequilibrium high-Tc YBa2Cu3O7−y superconductor

I. Iguchi; E. Kume; H. Takahashi

doi:10.1103/PhysRevB.62.5370

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Emitted spectra of electromagnetic waves from a tunnel-injected nonequilibrium high-Tc YBa2Cu3O7−y superconductor

I. Iguchi, E. Kume, H. Takahashi

DOI 10.1103/PhysRevB.62.5370 · Physical Review B

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Abstract

We report the measurements on the emitted spectra of terahertz electromagnetic waves from a tunnel-injected nonequilibrium high-Tc YBa2Cu3O7−y (YBCO) superconductor using a high-Tc YBCO Josephson spectroscopic detector fabricated on the same chip. The observed spectrum appeared as a single broad-peaked structure with peak frequency typically at about 5 THz at low temperature. The dependencies of peak frequency and line shape on temperature, c-axis current, and oxygen deficiency are investigated. The results are consistently interpreted in terms of Josephson plasma emission characteristic of oxide superconductors with optimal doping.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	85	Pressure not reported	onset
ErBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown