THE SEEBECK COEFFICIENT OF CA1-XSRXRUO3

Authors
KATANO T TSUDA N
Citation
T. Katano et N. Tsuda, THE SEEBECK COEFFICIENT OF CA1-XSRXRUO3, Journal of the Physical Society of Japan, 65(1), 1996, pp. 207-212
Citations number
11
Categorie Soggetti
Physics
Journal title
Journal of the Physical Society of Japan → ACNP
ISSN journal
00319015
Volume
65
Issue
1
Year of publication
1996
Pages
207 - 212
Database
ISI
SICI code
0031-9015(1996)65:1<207:TSCOC>2.0.ZU;2-F
Abstract
The Seebeck coefficient S of Ca1-xSrxRuO3 (0 less than or equal to x l ess than or equal to 1) was measured in the temperature range 78 K to 300 K. This coefficient always showed a large bend at about 160 K, irr espective of the magnetic properties of the sample studied. The differ ential temperature coefficient dS/dT was found to decrease above this temperature (S > 0). The usual single-band theory cannot explain this large bend, and we propose a percolation model in which metallic paths are composed of parallel-spin arrays, and semiconducting paths are co mposed of antiparallel-spin arrays.