Density of States in High- Tc Superconductor Vortices

C. Berthod; B. Giovannini

doi:10.1103/PhysRevLett.87.277002

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Density of States in High- Tc Superconductor Vortices

C. Berthod, B. Giovannini

DOI 10.1103/PhysRevLett.87.277002 · Physical Review Letters

T1

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Abstract

We calculated the electronic structure of a vortex in a pseudogapped superconductor within a model featuring strong correlations. With increasing strength of the correlations, the BCS core states are suppressed and the spectra inside and outside the core become similar. If the correlations are short range, we find new core states in agreement with the observations in YBa2Cu3O7−δ and Bi2Sr2CaCu2O8+δ. Our results point to a common phenomenology for these two systems and indicate that normal-state correlations survive below Tc without taking part in the overall phase coherence.

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