JOSEPHSON PLASMA RESONANCE SPECTROSCOPYOF THE LAYERED SUPERCONDUCTORS WITHINTRINSIC JOSEPHSON EFFECT

摘要

Over 10 years pass after experimental discovery Josephson plasma resonance (JPR) in high-T_c superconductors. JPR spectroscopy became the powerful tool to study vortex phase diagram and interlayer electrodynamics in Josephson coupled layered superconduc-tors like certain of high-T_c cuprates and molecular superconductors. We describe main principles of the JPR spectroscopy for measurement longitudinal plasma oscillations at the fundamental frequency ω_p. That frequency and linewidth of resonance is directly re-lated to the interlayer phase coherence. In this paper we report about developments and achievments in spectroscopy of JPR. The study of the vortex state of Bi_2Sr_2CaCu_2O_(8+δand c-axis electrodynamics of Bi_2Sr_2CaCu_2O_(8+δ) and Bi_2Sr_2CuO_(6+δ)w in zero magnetic field by .JPR.