Towards high-temperature coherence-enhanced transport in heterostructures of a few atomic layers

CM Kropf, A Valli, P Franceschini, GL Celardo… - Physical Review B, 2019 - APS
The possibility to exploit quantum coherence to strongly enhance the efficiency of charge
transport in solid state devices working at ambient conditions would pave the way to …

Kondo lattice mediated interactions in flat-band systems

P Kumar, G Chen, JL Lado - Physical Review Research, 2021 - APS
Electronic flat bands represent a paradigmatic platform to realize strongly correlated matter
due to their associated divergent density of states. In common instances, including electron …

Strongly correlated multi-impurity models: The crossover from a single-impurity problem to lattice models

F Eickhoff, FB Anders - Physical Review B, 2020 - APS
We present a mapping of various correlated multi-impurity Anderson models to a cluster
model coupled to a number of effective conduction bands capturing its essential low-energy …

Kondo screening and indirect magnetic exchange through a conventional superconductor studied by the density matrix renormalization group

C Plorin, M Potthoff - Physical Review B, 2024 - APS
The competition between the Kondo screening and indirect magnetic exchange in systems
with two magnetic impurities coupled to a conventional s-wave superconductor gives rise to …

Higher order spin interactions mediated by the substrate

S Głodzik, R Žitko - Physical Review B, 2024 - APS
Since the seminal works in the'50s, it has been known that a bath of noninteracting electrons
mediates an interaction between local moments (such as nuclear spins or magnetic …

Mean field decoupling of single impurity Anderson model through auxiliary Majorana fermions

I Titvinidze, J Stobbe, AN Rubtsov, G Rohringer - Annals of Physics, 2025 - Elsevier
We present a method to study the time evolution of the single impurity Anderson model
which exploits a mean field decoupling of the interacting impurity and the non-interacting …

Screening mechanisms in magnetic nanostructures

A Schwabe, M Hänsel, M Potthoff, AK Mitchell - Physical Review B, 2015 - APS
A theoretical concept is presented for the screening of several magnetic moments locally
exchange coupled to conduction electrons in a metallic nanostructure. We consider a …

Ferromagnetism of magnetic impurities coupled indirectly via conduction electrons: Insights from various theoretical approaches

I Titvinidze, A Schwabe, M Potthoff - Physical Review B, 2014 - APS
The magnetic ground-state properties of the periodic Anderson model with a regular
depletion of the correlated sites are analyzed within different theoretical approaches. We …

Charge redistribution in correlated heterostuctures within nonequilibrium real-space dynamical mean-field theory

I Titvinidze, ME Sorantin, A Dorda, W Von Der Linden… - Physical Review B, 2018 - APS
We address the steady-state behavior of a system consisting of several correlated
monoatomic layers sandwiched between two metallic leads under the influence of a bias …

Resonance effects in correlated multilayer heterostructures

I Titvinidze, A Dorda, W von der Linden, E Arrigoni - Physical Review B, 2016 - APS
We study the occurrence of negative differential conductance induced by resonance effects
in a model for a multilayer heterostructure. In particular, we consider a system consisting of …