Quantitative theory of magnetic interactions in solids
This review addresses the method of explicit calculations of interatomic exchange
interactions of magnetic materials. This involves exchange mechanisms normally referred to …
interactions of magnetic materials. This involves exchange mechanisms normally referred to …
Tracking the footprints of spin fluctuations: A multimethod, multimessenger study of the two-dimensional Hubbard model
The Hubbard model represents the fundamental model for interacting quantum systems and
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …
electronic correlations. Using the two-dimensional half-filled Hubbard model at weak …
Fingerprints of the local moment formation and its Kondo screening in the generalized susceptibilities of many-electron problems
We identify the precise hallmarks of the local magnetic moment formation and its Kondo
screening in the frequency structure of the generalized charge susceptibility. The sharpness …
screening in the frequency structure of the generalized charge susceptibility. The sharpness …
Consistent partial bosonization of the extended Hubbard model
We design an efficient and balanced approach that captures major effects of collective
electronic fluctuations in strongly correlated fermionic systems using a simple diagrammatic …
electronic fluctuations in strongly correlated fermionic systems using a simple diagrammatic …
Do**-dependent charge-and spin-density wave orderings in a monolayer of Pb adatoms on Si (111)
In this work we computed the phase diagram as a function of temperature and do** for a
system of lead adatoms allocated periodically on a silicon (111) surface. This Si (111): Pb …
system of lead adatoms allocated periodically on a silicon (111) surface. This Si (111): Pb …
Impact of partially bosonized collective fluctuations on electronic degrees of freedom
In this work we present a comprehensive analysis of collective electronic fluctuations and
their effect on single-particle properties of the Hubbard model. Our approach is based on a …
their effect on single-particle properties of the Hubbard model. Our approach is based on a …
Single-boson exchange representation of the functional renormalization group for strongly interacting many-electron systems
We present a reformulation of the functional renormalization group (fRG) for many-electron
systems, which relies on the recently introduced single-boson exchange (SBE) …
systems, which relies on the recently introduced single-boson exchange (SBE) …
Coexistence of -wave superconductivity and phase separation in the half-filled extended Hubbard model with attractive interactions
Understanding competing instabilities in systems with correlated fermions remains one of
the holy grails of modern condensed matter physics. Among the fermionic lattice models …
the holy grails of modern condensed matter physics. Among the fermionic lattice models …
Charge order and antiferromagnetism in the extended Hubbard model
We study the extended Hubbard model on a two-dimensional half-filled square lattice using
the dynamical cluster approximation. We present results on the phase boundaries between …
the dynamical cluster approximation. We present results on the phase boundaries between …
[HTML][HTML] Multiloop flow equations for single-boson exchange fRG
The recently introduced single-boson exchange (SBE) decomposition of the four-point
vertex of interacting fermionic many-body systems is a conceptually and computationally …
vertex of interacting fermionic many-body systems is a conceptually and computationally …