title: Elastic moduli of vortex lattices within nonlocal London model.
abstract: Vortex lattice (VL) elastic response is analyzed within the nonlocal London model which holds for high-kappa clean superconductors. The squash modulus vanishes at the field H( square) where VL undergoes a square-to-rhombus transition. For H>H( square), where the square VL is stable, the rotation modulus turns zero at H = H(r), indicating VL instability to rotations. The shear modulus depends on the shear direction; the dependence is strong in the vicinity of H( square) where the square VL is soft with respect to the shear along [110]. The H dependences of the moduli are evaluated for LuNi(2)B(2)C.
authors.affiliation: Department of Physics, University of Montenegro, P.O. Box 211, Podgorica, Yugoslavia.
authors.forename: P
authors.initials: P
authors.lastname: Miranovic
authors.forename: V G
authors.initials: VG
authors.lastname: Kogan