152 citations · 769 across the 31 of their papers we have counts for
19 papers · 1 filter
Suppression of the charge fluctuations by nonlocal correlations close to the Mott transition
Irakli Titvinidze, Julian Stobbe, Marvin Leusch +1
In this paper, we investigate the impact of nonlocal correlations on charge fluctuations in the two-dimensional single-band Hubbard model close to the Mott metal-to-insulator trans…
Mean Field Decoupling of Single Impurity Anderson Model through Auxiliary Majorana Fermions
Irakli Titvinidze, Julian Stobbe, Alexey N. Rubtsov +1
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 bat…
Invisible flat bands on a topological chiral edge
Youjiang Xu, Irakli Titvinidze, Walter Hofstetter
We prove that invisible bands associated with zeros of the single-particle Green's function exist ubiquitously at topological interfaces of 2D Chern insulators, dual to the chiral…
Hubbard model on the kagome lattice with time-reversal invariant flux and spin-orbit coupling
Irakli Titvinidze, Julian Legendre, Karyn Le Hur +1
We study the Hubbard model with time-reversal invariant flux and spin-orbit coupling and position-dependent onsite energies on the kagome lattice, using numerical and analytical me…
Spin-orbit coupling in the kagome lattice with flux and time-reversal symmetry
Irakli Titvinidze, Julian Legendre, Maarten Grothus +3
We study the topological properties of a spin-orbit coupled Hofstadter model on the Kagome lattice. The model is time-reversal invariant and realizes a topological i…
Charge redistribution in correlated heterostuctures within nonequilibrium real-space dynamical mean-field theory
Irakli Titvinidze, Max E. Sorantin, Antonius Dorda +2
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 voltage. In…
Thermoelectric properties of a strongly correlated layer
Irakli Titvinidze, Antonius Dorda, Wolfgang von der Linden +1
In this paper we investigate the effect of strong electronic interactions on the thermoelectric properties of a simple generic system, consisting of a single correlated layer sandw…
Resonance Effects in Correlated Multilayer Heterostructures
Irakli Titvinidze, Antonius Dorda, Wolfgang von der Linden +1
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 consistin…
Quasiparticle excitations in steady state transport across a correlated layer
Antonius Dorda, Irakli Titvinidze, Enrico Arrigoni
In this work we investigate the spectral and transport properties of a single correlated layer attached to two metallic leads, with particular focus on the low-energy physics. A st…
Transport Through a Correlated Interface: Auxiliary Master Equation Approach
Irakli Titvinidze, Antonius Dorda, Wolfgang von der Linden +1
We present improvements of a recently introduced numerical method [Arrigoni etal, Phys. Rev. Lett. 110, 086403 (2013)] to compute steady state properties of strongly correlated ele…
Crossover from conventional to inverse indirect magnetic exchange in the depleted Anderson lattice
Maximilian W. Aulbach, Irakli Titvinidze, Michael Potthoff
We investigate the finite-temperature properties of an Anderson lattice with regularly depleted impurities. The physics of this model is ruled by two different magnetic exchange me…
Strong-coupling limit of depleted Kondo- and Anderson-lattice models
Irakli Titvinidze, Andrej Schwabe, Michael Potthoff
Fourth-order strong-coupling degenerate perturbation theory is used to derive an effective low-energy Hamiltonian for the Kondo-lattice model with a depleted system of localized sp…
Ferromagnetism of magnetic impurities coupled indirectly via conduction electrons: Insights from various theoretical approaches
Irakli Titvinidze, Andrej Schwabe, Michael Potthoff
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 consid…
Inverse indirect magnetic exchange
Andrej Schwabe, Irakli Titvinidze, Michael Potthoff
Magnetic moments strongly coupled to the spins of conduction electrons in a nanostructure can confine the conduction-electron motion due to scattering at almost localized Kondo sin…
Boundary and finite-size effects in the competition between indirect magnetic exchange and Kondo screening
Irakli Titvinidze, Michael Potthoff
A system of conduction electrons can mediate an indirect magnetic exchange between magnetic impurites. The nonlocal exchange typically competes with the local Kondo screening of th…
Dynamical mean-field theory of indirect magnetic exchange
Irakli Titvinidze, Andrej Schwabe, Niklas Rother +1
To analyze the physical properties arising from indirect magnetic exchange between several magnetic adatoms and between complex magnetic nanostructures on metallic surfaces, the re…
Antiferromagnetic Order of Strongly Interacting Fermions in a Trap: Real-Space Dynamical Mean-Field Analysis
M. Snoek, I. Titvinidze, C. Toke +2
We apply Dynamical Mean-Field Theory to strongly interacting fermions in an inhomogeneous environment. With the help of this Real-Space Dynamical Mean-Field Theory (R-DMFT) we inve…
Triplet superconductivity in a 1D itinerant electron system with transverse spin anisotropy
C. Dziurzik, G. I. Japaridze, A. Schadschneider +2
In this paper we study the ground state phase diagram of a one-dimensional t-J-U model away from half-filling. In the large-bandwidth limit and for ferromagnetic exchange with easy…
Phase Diagram of the spin S=1/2 Extended XY model
Irakli Titvinidze, G. I. Japaridze
The quantum phase transition in the ground state of the Extended spin S=1/2 XY model is studied in detail. Using the exact solution of the model the low temperature thermodynamics,…