Possible Tricritical Point in Phase Diagrams of Interlayer Josephson-Vortex Systems in High- Tc Superconductors

Xiao Hu; Masashi Tachiki

doi:10.1103/PhysRevLett.85.2577

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Possible Tricritical Point in Phase Diagrams of Interlayer Josephson-Vortex Systems in High- Tc Superconductors

Xiao Hu, Masashi Tachiki

DOI 10.1103/PhysRevLett.85.2577 · Physical Review Letters

T1

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Abstract

A critical value in the product of the anisotropy parameter and the magnetic field is observed in interlayer Josephson-vortex systems by extensive Monte Carlo simulations. Below (above) this critical value the thermodynamic phase transition between the normal and the superconducting states upon temperature sweeping is first (second) order. It is discussed that the origin of this tricritical point is the highly anisotropic layered structure of high- Tc superconductors.

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.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown