UNUSUAL GROUND-STATE PROPERTIES OF UPD2AL3 - IMPLICATIONS FOR THE COEXISTENCE OF HEAVY-FERMION SUPERCONDUCTIVITY AND LOCAL-MOMENT ANTIFERROMAGNETISM

Authors
CASPARY R HELLMANN P KELLER M SPARN G WASSILEW C KOHLER R GEIBEL C SCHANK C STEGLICH F PHILLIPS NE
Citation
R. Caspary et al., UNUSUAL GROUND-STATE PROPERTIES OF UPD2AL3 - IMPLICATIONS FOR THE COEXISTENCE OF HEAVY-FERMION SUPERCONDUCTIVITY AND LOCAL-MOMENT ANTIFERROMAGNETISM, Physical review letters, 71(13), 1993, pp. 2146-2149
Citations number
36
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
71
Issue
13
Year of publication
1993
Pages
2146 - 2149
Database
ISI
SICI code
0031-9007(1993)71:13<2146:UGPOU->2.0.ZU;2-E
Abstract
We report measurements of the resistivity and the specific heat, perfo rmed as a function of temperature, magnetic field, and hydrostatic pre ssure on the antiferromagnetic (T(N)=14 K) heavy-fermion superconducto r (T(c)=2 K) UPd2Al3. Our results suggest a coexistence of two subsyst ems with more localized 5f states responsible for the magnetic propert ies and less localized states responsible for the superconducting prop erties. The latter are compatible with an order parameter of octagonal d-wave symmetry.