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Doping dependence of magnetoresistivity in polycrystalline Y(Ca)BCO

E. NAZAROVA1,* , K. BUCHKOV1, K. NENKOV2,3, S. TERZIEVA1

Affiliation

  1. Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
  2. IFW, Leibniz Institute for Solid State and Materials Research, P.O. BOX 270016, D-01171 Dresden, Germany
  3. International Laboratory of High Magnetic Fields and Low Temperatures, 53-421 Wroclaw, Poland

Abstract

Many important characteristics (Tc, Jc, Hirr ect.) of cuprate superconductors depend on doping level in three main regions: underdoped, optimally doped and overdoped. In this study magneto-resistive transition in Y(Ca)BCO polycrystalline samples with different level of doping is examined. The upper critical field and irreversibility lines were determined. Their behavior is explained by analogy with domelike shape of doping dependence of the superconducting transition temperature..

Keywords

Overdoping, Magnetoresistance, Irreversibility and Hc2(T) lines.

Submitted at: Sept. 25, 2012
Accepted at: Feb. 20, 2013

Citation

E. NAZAROVA, K. BUCHKOV, K. NENKOV, S. TERZIEVA, Doping dependence of magnetoresistivity in polycrystalline Y(Ca)BCO, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 1-2, pp. 66-68 (2013)