MICROCONTACTS OF HEAVY-FERMION CECU2GE2 WITH SIMPLE METALS AT 0.1K-LESS-THAN-T-LESS-THAN-5K

Authors
GLOOS K DULLMANN D WEIS M CANFIELD PC SPARN G STEGLICH F
Citation
K. Gloos et al., MICROCONTACTS OF HEAVY-FERMION CECU2GE2 WITH SIMPLE METALS AT 0.1K-LESS-THAN-T-LESS-THAN-5K, Physica. B, Condensed matter, 194, 1994, pp. 2019-2020
Citations number
7
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
2
Pages
2019 - 2020
Database
ISI
SICI code
0921-4526(1994)194:<2019:MOHCWS>2.0.ZU;2-O
Abstract
The differential microcontact resistance between monocrystalline CeCu2 Ge2 and simple metals as well as the thermal expansion of CeCu2Ge2 has been investigated. We observed spectra with smooth maxima around +/-3 mV, indicating the destruction of AF magnetic order in CeCu2Ge2 and sp ectra with additional structures that vanish around 0.6K, 1.1K, or 2.6 K. The shape of these anomalies and the respective temperatures point to CeCu2Ge2 becoming locally superconducting below these temperatures because of the high pressure exerted by the counter electrodes.