Condensed Matter Physics, 2011, vol. 14, No. 1, 13702: 1-6
DOI:10.5488/CMP.14.13702          arXiv:1106.6163

Title: Band spectrum transformation and temperature dependences of thermoelectric power of Hg1-xRxBa2Ca2Cu3 O8+δ system
Author(s):
  O. Babych (Ivan Franko National University of Lviv, 50 Dragomanov Str., 79005 Lviv, Ukraine) ,
  I. Gabriel (Ivan Franko National University of Lviv, 50 Dragomanov Str., 79005 Lviv, Ukraine) ,
  R. Lutsiv (Ivan Franko National University of Lviv, 50 Dragomanov Str., 79005 Lviv, Ukraine) ,
  M. Matviyiv (Ivan Franko National University of Lviv, 50 Dragomanov Str., 79005 Lviv, Ukraine) ,
  M. Vasyuk (Ivan Franko National University of Lviv, 50 Dragomanov Str., 79005 Lviv, Ukraine)

Temperature dependences of thermoelectric power S(T) at T>Tc of the Hg-based high temperature superconductors
Hg1-xRxBa2Ca2Cu3O8+δ (R=Re, Pb) have been analyzed with accounting for strong scattering of charge carriers. Transformation of parameters of a narrow conducting band in the region of the Fermi level was studied. The existence of correlation between the effective bandwidth and the temperature of a superconductive transition Tc is shown.

Key words: high-temperature superconductivity, superconductive transition temperature, thermoelectric power, narrow conduction band, peak of density of states, Fermi level
PACS: 74.25.Fy, 74.62.Dh, 74.72.Jt
Comments: Figs. 4, Refs. 13


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