225 citations · 2.3k across the 79 of their papers we have counts for
79 papers
Bad metal and negative compressibility transitions in a two-band Hubbard model
Raymond Fresard, Kevin Steffen, Thilo Kopp
We analyze the paramagnetic state of a two-band Hubbard model with finite Hund's coupling close to integer filling at in two spacial dimensions. Previously, a Mott metal-insu…
Winding vectors of topological defects: Multiband Chern numbers
Axel Fünfhaus, Thilo Kopp, Elias Lettl
Chern numbers can be calculated within a frame of vortex fields related to phase conventions of a wave function. In a band protected by gaps the Chern number is equivalent to the t…
Signatures of topological phase transitions in the s-wave superconductor at finite temperature
Stefan Gorol, Florian Loder, Daniel Braak +2
In two dimensions, an s-wave superconductor in the presence of Rashba spin-orbit coupling possesses distinct topologically non-trivial ground state phases controlled by Zeeman spli…
Magnetotransport of Functional Oxide Heterostructures Affected by Spin-Orbit Coupling: A Tale of Two-Dimensional Systems
Robert Bartel, Elias Lettl, Patrick Seiler +2
Oxide heterostructures allow for detailed studies of 2D electronic transport phenomena. Herein, different facets of magnetotransport in selected spin-orbit-coupled systems are anal…
Optical conductivity and resistivity in a four-band model for ZrTe from ab-initio calculations
Corentin Morice, Elias Lettl, Thilo Kopp +1
ZrTe is considered a potential candidate for either a Dirac semimetal or a topological insulator in close proximity to a topological phase transition. Recent optical conductivi…
Non-unique connection between bulk topological invariants and surface physics
Corentin Morice, Thilo Kopp, Arno P. Kampf
At the heart of the study of topological insulators lies a fundamental dichotomy: topological invariants are defined in infinite systems, but surface states as their main footprint…