Two-band hopping conductivity in the nonmetallic barrier material PrBa2Cu2.8Ga0.2Oy (y∼7)

21 November 1994

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 65 (21) , 2734-2736
https://doi.org/10.1063/1.112551

Abstract

Using combined thermoelectric and resistivity measurements on fully oxygenated PrBa₂Cu_2.8Ga_0.2O_y samples, we show that carriers from two energy bands probably participate in the hopping transport. We obtain estimates of the density of states and the localization length of carriers in one of these bands, and of the energy gap between them.

Keywords

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