Open AccessObservation of the vortex lattice melting by NMR spin-lattice relaxation in the mixed state
Author(s) -
L. N. Bulaevskiǐ,
P. C. Hammel,
В. М. Винокур
Publication year - 1994
Language(s) - English
Resource type - Reports
DOI - 10.2172/198701
Subject(s) - condensed matter physics , vortex , vortex state , anisotropy , spin–lattice relaxation , magnetization , amplitude , magnetic field , perpendicular , relaxation (psychology) , superconductivity , lattice (music) , physics , nuclear quadrupole resonance , optics , psychology , social psychology , geometry , mathematics , quantum mechanics , acoustics , thermodynamics
For anisotropic layered superconductors the effect of moving vortices on the nuclear spin magnetization is calculated. Current is supposed to flow along layers, and applied magnetic field is tilted with respect to c-axis. In the solid phase the motion of the vortex lattice produces an alternating magnetic field perpendicular to the applied field which causes the decay of the spin-echo amplitude. This decay rate will display an array of peaks as a function of frequency. In the liquid phase this alternating field contribute to the longitudinal relaxation rate W{sub 1} which has a single peak