Density of States in High-TcSuperconductor Vortices

2001/05/31 by Christophe Berthod, C. Berthod, B. Giovannini
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.87.277002

published as Phys. Rev. Lett. 87, 277002 (2001) · REVTeX 4, 5 pages, 2 EPS figures. Some changes to the text; new figures; references updated

openalex publication_date 2001/12/13 · arxiv created 2001/12/18 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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 YBa₂Cu₃O_7\ensuremath-\ensuremathδ and Bi₂Sr₂CaCu₂O_8+\ensuremathδ. Our results point to a common phenomenology for these two systems and indicate that normal-state correlations survive below T_c without taking part in the overall phase coherence.

Citations

• STM Studies of the Electronic Structure of Vortex Cores inBi2Sr2CaCu2O8+δ
• Mixed-state quasiparticle spectrum ford-wave superconductors
• Gorkov equations for a pseudogapped high-temperature superconductor
• Staggered Local Density of States around the Vortex in Underdoped Cuprates
• Pairing Fluctuation Theory of Superconducting Properties in Underdoped to Overdoped Cuprates
• Self-Consistent Electronic Structure of adx2−y2and adx2−y2+idxyVortex
• The pseudogap in high-temperature superconductors: an experimental survey