6 papers · 1 filter
Mott-Hubbard quantum criticality in paramagnetic CMR pyrochlores
L. Craco, C. I. Ventura, A. N. Yaresko +1
We present a correlated {\it ab initio} description of the paramagnetic phase of TlMnO, employing a combined local density approximation (LDA) with multiorbital dynamic…
Orbital selective insulator-metal transition in V2O3 under external pressure
M. S. Laad, L. Craco, E. Müller-Hartmann
We present a detailed account of the physics of Vanadium sesquioxide (), a benchmark system for studying correlation induced metal-insulator transition(s). Based on a…
Insulator-Metal Transition in the Rutile-based VO2
M. S. Laad, L. Craco, E. Müller-Hartmann
The metal-insulator transition (MIT) in paramagnetic VO2 is studied within LDA+DMFT(IPT), which merges the local density approximation (LDA) with dynamical mean field theory (DMFT)…
Towards a Fully Ab-Initio Description of the Diluted Magnetic Semiconductor . Ferromagnetism, Electronic Structure, and Optical Response
L. Craco, M. S. Laad, E. Müller-Hartmann
There are two competing views of itinerant ferromagnetism, the first viewing ferromagnetism as resulting from the indirect coupling between local moments via the itinerant carrier…
Orbital Switching and the First-Order Insulator-Metal Transition in Paramagnetic V_2O_3
M. S. Laad, L. Craco, E. Müller-Hartmann
The first-order metal-insulator transition (MIT) in paramagnetic is studied within the ab-initio scheme LDA+DMFT, which merges the local density approximation (LDA) wi…
Disordered Hubbard model in
L. Craco, M. S. Laad, E. Müller-Hartmann
We investigate the effects of static, diagonal disorder in the Hubbard model by treating the dynamical effects of local Hubbard correlations and disorder on an equal foo…