Τίτλος:
Thermopower, Hall effect and magnetoresistivity of Ru1-xSbxSr2Sm1.5Ce0.5Cu2O10-d
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Magnetoresistivity, thermopower and Hall effect on the samples of Ru1-xSbxSr2Sm1.5Ce0.5Cu2O10-d were investigated in the temperature range 4-300 K with a magnetic field up to 9 T. Superconducting transition temperature decreases with increases content of Sb, due to a distortion of RuO6 octahedral, which is responsible of the increase in hole localization, reflected by Hall concentration, too. The inhomogeneous granular structure is put in evidence by the intragranular, Tco, and intergranular Tcg, transition temperatures. Hall effect and thermopower anomalous decreases below Tmagnetic can be explained within a simple two-band model by a transition from localized to more itinerant behavior in the RuO2 layer at Tmagnetic. © 2007 Elsevier B.V. All rights reserved.
Συγγραφείς:
Ilonca, G.
Patapis, S.
Beiusan, F.
Lung, C.
Toma, V.
Balint, P.
Bodea, M.
Jurcut, T.
Περιοδικό:
Physica C: Superconductivity and its Applications
Αριθμός / τεύχος:
SPEC. ISS.
Λέξεις-κλειδιά:
Hall effect; Magnetoresistance; Mathematical models; Superconducting transition temperature; Thermoelectric power, Hall concentration; Hole localization; Inhomogeneous granular structures; Two-band models, Ruthenium alloys
DOI:
10.1016/j.physc.2007.03.084
