Electrodynamics of correlated electron materials

DN Basov, RD Averitt, D Van Der Marel, M Dressel… - Reviews of Modern …, 2011 - APS
Studies of the electromagnetic response of various classes of correlated electron materials
including transition-metal oxides, organic and molecular conductors, intermetallic …

Colloquium: Identifying the propagating charge modes in doped Mott insulators

P Phillips - Reviews of Modern Physics, 2010 - APS
High-temperature superconductivity in the copper-oxide ceramics remains an unsolved
problem because we do not know what the propagating degrees of freedom are in the …

Continuous-time solver for quantum impurity models

P Werner, A Comanac, L De'Medici, M Troyer… - Physical Review Letters, 2006 - APS
We present a new continuous-time solver for quantum impurity models such as those
relevant to dynamical mean field theory. It is based on a stochastic sampling of a …

Local electronic correlation at the two-particle level

G Rohringer, A Valli, A Toschi - Physical Review B—Condensed Matter and …, 2012 - APS
Electronic-correlated systems are often well described by dynamical mean field theory
(DMFT). While DMFT studies have mainly focused hitherto on one-particle properties …

Strongly correlated superconductivity: A plaquette dynamical mean-field theory study

K Haule, G Kotliar - Physical Review B—Condensed Matter and Materials …, 2007 - APS
We use cluster dynamical mean-field theory to study the simplest models of correlated
electrons, the Hubbard model and the tJ model. We use a plaquette embedded in a medium …

Impact of nonlocal correlations over different energy scales: A dynamical vertex approximation study

G Rohringer, A Toschi - Physical Review B, 2016 - APS
In this paper, we investigate how nonlocal correlations affect, selectively, the physics of
correlated electrons over different energy scales, from the Fermi level to the band edges …

Solving the dynamical mean-field theory at very low temperatures using the Lanczos exact diagonalization

M Capone, L de'Medici, A Georges - Physical Review B—Condensed Matter …, 2007 - APS
We present an efficient method to solve the impurity Hamiltonians involved in dynamical
mean-field theory at low but finite temperature based on the extension of the Lanczos …

Optical conductivity and the correlation strength of high-temperature copper-oxide superconductors

A Comanac, L de'Medici, M Capone, AJ Millis - Nature Physics, 2008 - nature.com
Since their discovery in 1986, the high-temperature copper-oxide superconductors have
been a central object of study in condensed-matter physics. Their highly unusual properties …

How to read between the lines of electronic spectra: the diagnostics of fluctuations in strongly correlated electron systems

T Schäfer, A Toschi - Journal of Physics: Condensed Matter, 2021 - iopscience.iop.org
While calculations and measurements of single-particle spectral properties often offer the
most direct route to study correlated electron systems, the underlying physics may remain …

Energetic balance of the superconducting transition across the BCS—Bose Einstein crossover in the attractive Hubbard model

A Toschi, M Capone, C Castellani - Physical Review B—Condensed Matter …, 2005 - APS
We investigate by means of Dynamical mean-field theory the crossover from BCS
superconductivity to Bose-Einstein (BE) condensation of preformed pairs which occurs in the …