Article

Temperature dependence of thermo-emf and isothermal resistance of HTS crystals in the vicinity of superconducting transition

Yu. N. TszyanB. I. Verkin Phsyicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovО. ShevchenkoB. I. Verkin Phsyicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 Kharkov

Low Temperature Physicsjournal1994en

ABI

Abstract

The thermo-emf and conductivity of the crystals of Bi2Sr2CaCu2Ox and HoBa2Cu3Ox are studied near the superconducting transition temperature. Below the mean-field critical temperature, the temperature dependence of the thermo-emf differs sharply from that expected from the theory of fluctuations of superconducting Cooper pairs. The temperature variation of thermo-emf is also observed in the case when the resistance of the crystal is already equal to zero. This peculiarity in the behavior of thermo-emf is associated with the fluctuational contribution of pairs of 2D-magnetic vortices which are sensitive to non-isothermal conditions under which thermoelectric measurements were made.

Topics

Physics of Superconductivity and Magnetism Superconducting Materials and Applications Magnetic and transport properties of perovskites and related materials

Identifiers

DOI: 10.1063/10.0033702

Citations and references

Cited by 04 references

Metrics — AkademScholar