Abstract
The dispersive detection of an electron-spin resonance spectrometer is far more sensitive than the conventional absorptive detection. It has been successfully exploited to verify the superconducting state for the recently developed high T c superconductors by the observation of resonant frequency shift in a TE 102 microwave cavity. We attribute the increase of resonant frequency as temperature decreases to be due to the Meissner effect for T < T c and the skin-depth effect for T > T c . The temperature dependence of penetration depth λ( T) following the Casimir-Gorter relation is not adequate to account for the frequency drift at T below T c , while it can be elucidated more fully by the heavy-Fermion pairing mechanism.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
