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VOLUME 71 (2000) | ISSUE 8 | PAGE 472
Theory of vortex lattice effects on STM spectra in d-wave superconductors
PACS: 74.20.-z, 74.25.Jb, 74.60.-w, 74.72.-h
Theory of scanning tunneling spectroscopy of low energy quasiparticle (QP) states in vortex lattices of cf-wave superconductors is developed taking account of the effects caused by an extremely large extension of QP wavefunctions in the nodal directions and the band structure in the QP spectrum. The oscillatory structures in STM spectra, which correspond to van Hove singularities are analysed. Theoretical calculations carried out for finite temperatures and scattering rates are compared with recent experimental data for high-Tc cuprates.