Nonlocal In-Plane Resistance due to Vortex-Antivortex Dynamics in High- Tc Superconducting Films

Y. Kopelevich; F. Ciovacco; P. Esquinazi; M. Lorenz

doi:10.1103/PhysRevLett.80.4048

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Nonlocal In-Plane Resistance due to Vortex-Antivortex Dynamics in High- Tc Superconducting Films

Y. Kopelevich, F. Ciovacco, P. Esquinazi, M. Lorenz

DOI 10.1103/PhysRevLett.80.4048 · Physical Review Letters

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Abstract

In high- Tc superconducting YBa2Cu3O7−δ films and at no applied magnetic field we found both positive and negative in-plane nonlocal resistance in the vicinity of a vortex-antivortex unbinding transition, as it was predicted recently. The sign of the nonlocal resistance depends on the probed region in the current-temperature diagram. Our results indicate that a negative nonlocal resistance is due to the motion of unbounded vortex-antivortex (V-A), whereas a positive sign is attributed to the motion of a 2D V-A ordered lattice.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	91.5	Pressure not reported	midpoint
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	90.66	Pressure not reported	midpoint
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	88.8	Pressure not reported	midpoint
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown