NEGATIVE DIFFERENTIAL RESISTIVITY IN CA3RU2O7 - UNUSUAL TRANSPORT ANDMAGNETIC COUPLING IN A NEAR-METALLIC SYSTEM

Authors
GUERTIN RP BOLIVAR J CAO G MCCALL S CROW JE
Citation
Rp. Guertin et al., NEGATIVE DIFFERENTIAL RESISTIVITY IN CA3RU2O7 - UNUSUAL TRANSPORT ANDMAGNETIC COUPLING IN A NEAR-METALLIC SYSTEM, Solid state communications, 107(6), 1998, pp. 263-266
Citations number
26
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
107
Issue
6
Year of publication
1998
Pages
263 - 266
Database
ISI
SICI code
0038-1098(1998)107:6<263:NDRIC->2.0.ZU;2-2
Abstract
The d.c. current-voltage characteristics of single crystals of bilayer ed Ca3Ru2O7 show ''S_shaped'', current-controlled, negative differenti al resistivity, the first such observation in heavy transition metal o xides. The non-ohmic behavior is restricted to the Ru-based antiferrom agnetic non-metallic region of the complex temperature-magnetic field phase space. The effect is seen in related single crystal iridates. (C ) 1998 Elsevier Science Ltd. All rights reserved.