In-plane I−V characteristics of interlayer Josephson vortices in cuprate high-Tc superconductors: Dynamical simulations

Qing-Hu Chen; Xiao Hu

doi:10.1103/PhysRevB.75.064504

← Back to search

In-plane I−V characteristics of interlayer Josephson vortices in cuprate high-Tc superconductors: Dynamical simulations

Qing-Hu Chen, Xiao Hu

DOI 10.1103/PhysRevB.75.064504 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

Computer simulations on Josephson vortex systems driven by in-plane currents in cuprate high-Tc superconductors have been performed. For high anisotropy and magnetic field, we find power-law I−V characteristics with the index jumping from 1 (i.e., Ohmic) at high temperatures to ⩾3 (i.e., non-Ohmic) at intermediate temperatures, which can be attributed to a Kosterlitz-Thouless (KT) transition. In the KT phase, simulations reveal a resistivity independent of the angle between the current and the magnetic field, i.e., orientation-independent dissipation, due to the intralayer quasi-long-range order and interlayer short-range order of Josephson vortices. For low anisotropy and magnetic field, an orientation-dependent non-Ohmic dissipation is observed where the three-dimensional long-range order exists. The present approach provides a unified explanation to previous experimental observations in the non-Ohmic regime.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown