5 papers
Gauge mean-field theories of the underscreened Kondo lattice
Ewan Scott, Michal Kwasigroch
Various mean-field decoupling schemes have been introduced thus far to study the important and challenging problem of the spin- underscreened Kondo lattice where magnetic order…
Coherence-driven origin of metamagnetism in anisotropic heavy-fermion systems
Ewan Scott, Zheyu Wu, Theodore I. Weinberger +2
A number of heavy-fermion materials exhibit magnetic field-induced metamagnetism: on applying a field along the magnetic hard axis, the magnetization first rises gradually, then ju…
Kondo singlet from ferromagnetic coupling: an analog of Anderson-Morel superconductivity in the magnetic channel
Ewan Scott, Yaqi Chen, Michael Turaev +4
We consider magnetic impurities coupled to a conduction sea via a fully isotropic ferromagnetic spin-exchange term, the strength of which depends on the conduction-electron modes i…
Microscopic origin of hard-plane antiferromagnetism in the Kondo lattice Ce2Rh3Ge5
Rajesh Tripathi, Ewan Scott, D. T. Adroja +16
Hard plane antiferromagnetic order where ordered moments lie perpendicular to the single-ion crystal electric field easy axis is rare in Ce-based Kondo lattices and is a subject of…
Destabilisation of local magnetic anisotropy in heavy-fermion compounds
Ewan Scott, Michal Kwasigroch
The local magnetic anisotropy of a typical crystalline compound is usually attributed to the combined effect of crystal electric fields and spin-orbit coupling. We show that this s…