Out-of-plane transverse resistivity in high-Tc superconductors as a signature of flow of rigid vortex lines

Abstract

When the transport current is applied parallel to the CuO2 layers, say, along the a axis, of a high-Tc superconductor, and the magnetic field B is in a direction which makes a polar angle θ with the c axis and an azimuthal angle φ with the ac plane, for the case of rigid flux lines, in addition to the usual longitudinal resistivity ρ∥, there should also exist an out-of-plane transverse resistivity ρ⊥, which is of the same order of magnitude as ρ∥ and satisfies the relation ‖ρ⊥/ρ∥‖=tanθ cosφ in the high anisotropy limit and for θ being not very close to π/2. For less rigid flux lines, reduction in ‖ρ⊥/ρ∥‖ from this prediction should be observed, and for a set of decoupled pancake vortices, ρ⊥ should vanish entirely.

Source-reported materials — not catalogue approval

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