NON-FERMI-LIQUID BEHAVIOR IN CECU2SI2 AT THE DISAPPEARANCE OF THE PRESUMABLY MAGNETICALLY ORDERED A-PHASE

Authors
GEGENWART P LOHMANN M LANG M HELFRICH R LANGHAMMER C KOPPEN M GEIBEL C STEGLICH F ASSMUS W
Citation
P. Gegenwart et al., NON-FERMI-LIQUID BEHAVIOR IN CECU2SI2 AT THE DISAPPEARANCE OF THE PRESUMABLY MAGNETICALLY ORDERED A-PHASE, Physica. B, Condensed matter, 230, 1997, pp. 572-575
Citations number
17
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
230
Year of publication
1997
Pages
572 - 575
Database
ISI
SICI code
0921-4526(1997)230:<572:NBICAT>2.0.ZU;2-X
Abstract
We present transport and thermodynamic measurements on two high-qualit y single crystals of CeCu2Si2 with different ground-state properties c rystal #1 (''A/S''-type) shows a competition of superconductivity and a presumably magnetically ordered ''A-phase''. The latter develops out of a low-temperature state where the resistivity varies as rho - rho( 0) = aT(2) indicative of a coherent heavy Fermi liquid. By contrast, n on-Fermi-liquid behavior is found for crystal #2 (''S''-type) which la cks the A-phase for B < 5 T.