Browsing by Subject "Hubbard model"
Now showing items 1-4 of 4
-
Impurity band magnetism in organic semiconductors
(2019)Recent experiments and theoretical studies have proposed that spin-transport in organic semiconductors, in particular in Alq3, may occur in an impurity band. Here we model the electronic and magnetic properties of such ... -
Machine learning density functional theory for the Hubbard model
(2019)The solution of complex many-body lattice models can often be found by defining an energy functional of the relevant density of the problem. For instance, in the case of the Hubbard model the spin-resolved site occupation is ... -
Machine-learning semilocal density functional theory for many-body lattice models at zero and finite temperature
(2021)We introduce a machine-learning density-functional-theory formalism for the spinless Hubbard model in one dimension at both zero and finite temperature. In the zero-temperature case this establishes a one-to-one ... -
Mott-Hubbard transition and spin-liquid state on the pyrochlore lattice
(2016)The pyrochlore lattice involves corner-sharing tetrahedra and the resulting geometric frustration is believed to suppress any antiferromagnetic order for Mott insulators on this structure. There are nevertheless short-range ...