Reflectivity and Microwave Absorption in Crystals with Alternating Intrinsic Josephson Junctions

Ch. Helm; L. N. Bulaevskii; E. M. Chudnovsky; M. P. Maley

doi:10.1103/PhysRevLett.89.057003

← Back to search

Reflectivity and Microwave Absorption in Crystals with Alternating Intrinsic Josephson Junctions

Ch. Helm, L. N. Bulaevskii, E. M. Chudnovsky, M. P. Maley

DOI 10.1103/PhysRevLett.89.057003 · Physical Review Letters

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We compute the frequency and magnetic field dependencies of the reflectivity R(ω) in layered superconductors with two alternating intrinsic Josephson junctions with different critical current densities and quasiparticle conductivities for the electric field polarized along the c axis. The parameter α describing the electronic compressibility of the layers and the charge coupling of neighboring junctions was extracted for the SmLa1−xSr ︀xCuO ︀4−δ superconductor from two independent optical measurements, the fit of the loss function L(ω) at zero magnetic field and the magnetic field dependence of the peak positions in L(ω). The experiments are consistent with a free electron value for α.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
SmLa1-xSrxCuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
SmLa0.8Sr0.2CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown