NMR-STUDY ON A METAL-INSULATOR-TRANSITION IN OXYSULFIDES (LA1-XCAXO)CU1-XNIXS

Authors
FURUKAWA Y IKEDA S WATANABE H KUMAGAI K MORI K TAKANO Y SEKIZAWA K
Citation
Y. Furukawa et al., NMR-STUDY ON A METAL-INSULATOR-TRANSITION IN OXYSULFIDES (LA1-XCAXO)CU1-XNIXS, Physica. C, Superconductivity, 282, 1997, pp. 1105-1106
Citations number
4
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
2
Pages
1105 - 1106
Database
ISI
SICI code
0921-4534(1997)282:<1105:NOAMIO>2.0.ZU;2-4
Abstract
We have investigated electronic states of (La1-xCaxO)Cu1-xNixS using C u-63 and La-139 nuclear magnetic resonance (NMR). The relaxation proce ss of Cu-63 is confirmed to be quadrupole process for x=0, while the m agnetic process dominates in x=0.1 at low temperature (T). Cu-63 spin- lattice relaxation time T-1 in x=0.1 at low T roughly follows the Korr inga-like relation of T1T=similar to 50 (sK), suggesting that the syst em is in a metallic state.