6533b850fe1ef96bd12a8288

RESEARCH PRODUCT

Antiferromagnetism and the node structure of the superconducting order parameter of UPd Al

Martin JourdanH. AdrianMichael Huth

subject

SuperconductivityBrillouin zonePhysicsCondensed matter physicsPairingAntiferromagnetismCondensed Matter::Strongly Correlated ElectronsFermi surfaceCondensed Matter PhysicsMagnetic susceptibilityInelastic neutron scatteringElectronic Optical and Magnetic MaterialsSpin-½

description

The node structure of the superconducting order parameter of the heavy-fermion system is analyzed within the weak-coupling theory. A pairing interaction induced by the exchange of antiferromagnetic spin excitations is assumed as suggested by recent inelastic neutron scattering experiments and tunneling spectroscopy. The multi-sheeted Fermi surface is taken into account. Based on a model susceptibility for the simple antiferromagnetic structure of , line nodes result at the rim of the magnetic Brillouin zone.

https://doi.org/10.1007/s100510050087