6533b86cfe1ef96bd12c8991
RESEARCH PRODUCT
Evidence for Multiband Superconductivity in the Heavy Fermion CompoundUNi2Al3
A. ZakharovMartin JourdanMichael FoersterH. Adriansubject
PhysicsSuperconductivityMagnetic momentCondensed matter physicsCondensed Matter::SuperconductivityTransition temperatureGeneral Physics and AstronomyFermi surfaceCharge carrierHeavy fermion superconductorAnisotropyCritical fielddescription
Epitaxial thin films of the heavy fermion superconductor UNi2Al3 with Tc(max)=0.98 K were investigated. The transition temperature Tc depends on the current direction which can be related to superconducting gaps opening at different temperatures. Also the influence of the magnetic ordering at TN approximately 5 K on R(T) is strongly anisotropic, indicating different coupling between the magnetic moments and itinerant charge carriers on the multisheeted Fermi surface. The upper critical field Hc2(T) suggests an unconventional spin-singlet superconducting state.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-08-24 | Physical Review Letters |