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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