We explored the screening of magnetic moments in the case of generic density of stats in the band. It is common practice to approximate the density of states to be constant. It turns out that this is not a good approximation and that the deviation become particularly noticeable close to the band edges with characteristic van Hove singularities.
COBISS.SI-ID: 29770023
In superconducting thin films an in-plane magnetic field leads to strong Zeeman splitting of the quasiparticle excitations without suppressing the superconducting state. We explore the effect of this polarization in the bound states in the superconducting gap (Shiba states). We found a qualitatively different phase boundary between the singlet and doublet phases as a function of hybridization and the external magnetic field.
COBISS.SI-ID: 30256679
We explored the Kondo impurity model with two channel, which in the case of normal-state channels supports a ground state that is a non-Fermi liquid. We explored the consequences of opening a superconducting gap in the leads. We discovered the emergence of robust bound states with characteristic energy ratios. The ratios play a similar role as the characteristic power-law exponents in critical systems.
COBISS.SI-ID: 30265383