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Ab-initio calculations for the beta-tin diamond transition in Silicon: comparing theories with experiments
Ab-initio calculations for the beta-tin diamond transition Silicon:
2010/11/19
We investigate the pressure-induced metal-insulator transition from diamond to β-tin in bulk Silicon,using quantum Monte Carlo (QMC) and density functional theory (DFT) approaches. We show
that it is...
New Hydrocarbon Superconductor on the Verge of Metal-Insulator Transition: Electronic Structures and Magnetic Properties of K3picene
New Hydrocarbon Superconductor Verge of Metal-Insulator Transition: Electronic Structures Magnetic Properties of K3picene
2010/11/22
We have investigated the electronic structures and magnetic properties of of K3picene, which
is a first hydrocarbon superconductor with high transition temperature Tc=18K. We have shown
that the met...
Orbital Order, Metal Insulator Transition, and Magnetoresistance-Effect in the two-orbital Hubbard model
Orbital Order Metal Insulator Transition Magnetoresistance-Effect
2010/11/19
We study the effects of temperature and magnetic field on a two-orbital Hubbard model within
dynamical mean field theory. We focus on the quarter filled system, which is a special point in the phase ...
A Microscopic View on the Mott transition in Chromium-doped V2O3
Microscopic View Mott transition Chromium-doped V2O3
2010/11/17
V2O3 is the prototype system for the Mott transition, one of the most fundamental phenom-
ena of electronic correlation. Temperature, dop-ing or pressure induce a metal to insulator transi-tion (MIT)...
Metal-Insulator Transition and Magnetic Order in the Pyrochlore Oxide Hg2Ru2O7
pyrochlore structure ruthenium oxide Hg2Ru2O7 NMR metal-insulator transition magnetic magnetic
2010/11/17
We report results of NMR experiments on the ruthenium oxide Hg2Ru2O7 with the py-rochlore structure, which exhibits a metal-insulator transition at TMI = 107 K. In the metallic
phase above TMI, the n...