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Small-polaron hopping conductivity in the PrBa2Cu3−xGaxO7−y system

✍ Scribed by G.P. Triberis; N. Guskos; V. Likodimos

Book ID
103948363
Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
524 KB
Volume
228
Category
Article
ISSN
0921-4534

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✦ Synopsis

Based on experimental observations we propose the small-polaron hopping model to interpret the behavior of the resistivity of PrBa2Cu 3_xGaxO7 y system with x= 0.00-0.60 in a wide temperature range ( 14-290 K), reported by other workers. Using percolation arguments we evaluate the maximum hopping distances, at high and low temperatures, together with other relevant parameters, and we give a unified and meaningful explanation of the transport mechanism, for different Ga concentrations and the entire temperature range.

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