7 papers · 1 filter
Unconventional fully-gapped superconductivity in the heavy-fermion metal CeCuSi
Michael Smidman, Oliver Stockert, Emilian M. Nica +4
The heavy-fermion metal CeCuSi was the first discovered unconventional, non-phonon-mediated superconductor, and for a long time was believed to exhibit single-band -wave…
Matrix-pairing states in the alkaline Fe-selenide superconductors: exotic Josephson junctions
Emilian M. Nica, Qimiao Si, Onur Erten
True to their unconventional nature, multi-band alkaline Fe-selenides and, more recently, the heavy-fermion CeCuSi have shown signatures of fully-gapped but sign-changi…
Theory of pairing in mixed-valent correlated metals
Emilian M. Nica, Onur Erten
Motivated by the recent discovery of superconductivity in square-planar nickelates as well as by longstanding puzzling experiments in heavy-fermion superconductors, we study Cooper…
Theoretical investigation of superconductivity in trilayer square-planar nickelates
Emilian M. Nica, Jyoti Krishna, Rong Yu +3
The discovery of superconductivity in Sr-doped NdNiO is a crucial breakthrough in the long pursuit for nickel oxide materials with electronic and magnetic properties similar…
Multiorbital singlet pairing and superconductivity
Emilian M. Nica, Qimiao Si
Recent experiments in multiband Fe-based and heavy-fermion superconductors have challenged the long-held dichotomy between simple - and -wave spin-singlet pairing states. Her…
Interacting Majorana fermions in strained nodal superconductors
Emilian M. Nica, Onur Erten
Landau levels (LL) have been predicted to emerge in systems with Dirac nodal points under applied non-uniform strain. We consider 2D, singlet (2D-S) and 3D equ…