Correlation Between The Anisotropy and The Effective Mass of The Quasi-Particles in Oxide Superconductors

Details Correlation Between The Anisotropy and The Effective Mass of The Quasi-Particles in Oxide Superconductors Correlation Between The Anisotropy and The Effective Mass of The Quasi-Particles in Oxide Superconductors

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..899..271a&link_type=abstract

SIXTH INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION. AIP Conference Proceedings, Volume 899, pp. 271-272 (2007).

Physics

2

Cuprate Superconductors, Fermi Surface: Calculations And Measurements, Effective Mass, G Factor, Quantum Gravity

Scientific paper

Determination of Josephson penetration depth has a crucial importance in calculation of both anisotropy factor and the effective mass of quasi-particles (m*) in high temperature copper oxide superconductors. In this study, the effective mass values of the quasi-particles have been determined via third derivative of phase differences of quantum wave function that represents the superconducting state of the system. According to our calculations, the anisotropy factor and m* have been affected by temperature varying from 5 to 90 K for over-doped sample. Moreover, the anisotropy factor and m* of the superconducting media are found to be changed by temperature, applied magnetic field and the oxygen annealing procedures. Furthermore, the quantum vertex which corresponds to the quantum gravity that has been already determined for optimally oxygen doped mercury cuprate superconductors has not showed up in over-doped samples investigated.

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