46 citations · 74 across the 3 of their papers we have counts for
4 papers
Magnetic instability of the orbital-selective Mott phase
Markus Greger, Michael Sekania, Marcus Kollar
We characterize the low-energy physics of the two-orbital Hubbard model in the orbital-selective Mott phase, in which one band is metallic and the other insulating. Using dynamical…
Orbital-selective metal-insulator transition and gap formation above Tc in superconducting Rb1-xFe2-ySe2
Zhe Wang, M. Schmidt, J. Fischer +5
We report on a hierarchy of temperatures Tc < Tgap < Tmet in superconducting Rb1-xFe2-ySe2 observed by THz spectroscopy. Above Tmet = 90 K the material reveals semiconducting chara…
Isosbestic Points: Theory and Applications
M. Greger, M. Kollar, D. Vollhardt
We analyze the sharpness of crossing ("isosbestic") points of a family of curves which are observed in many quantities described by a function f(x,p), where x is a variable (e.g.,…
Emergence of a common energy scale close to the orbital-selective Mott transition
Markus Greger, Marcus Kollar, Dieter Vollhardt
We calculate the spectra and spin susceptibilities of a Hubbard model with two bands having different bandwidths but the same on-site interaction, with parameters close to the orbi…