THE ZERO-GAP CE3AU3SB4-X SYSTEM - A TRANSPORT, THERMODYNAMIC AND OPTICAL STUDY

Authors
BRODERICK S VESCOLI V BUSCHINGER B GUTH W TROVARELLI O WEIDEN M DEGIORGI L GEIBEL C STEGLICH F
Citation
S. Broderick et al., THE ZERO-GAP CE3AU3SB4-X SYSTEM - A TRANSPORT, THERMODYNAMIC AND OPTICAL STUDY, Solid state communications, 108(7), 1998, pp. 463-467
Citations number
17
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
108
Issue
7
Year of publication
1998
Pages
463 - 467
Database
ISI
SICI code
0038-1098(1998)108:7<463:TZCS-A>2.0.ZU;2-2
Abstract
We report our resistivity, thermoelectric power and optical investigat ions on the Ce3Au3Sb4-x narrow-gap insulator. The resistivity for x = 0.12 and 0.17 is characterized by a semiconducting-like behaviour at l ow temperatures, which contrasts with the metallic-like temperature de pendence of the thermoelectric power. This apparent contradiction can be reconciled by a so-called ''zero-gap'' scenario, as supported by th e optical investigation. (C) 1998 Elsevier Science Ltd. All rights res erved.