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5 papers · 2 filters
Non-collinear Magnetic Configurations at Finite Temperature in Thin Films
L. Rózsa, L. Szunyogh, L. Udvardi
The finite-temperature magnetism of a monolayer on a bcc (110) surface was examined using a model Hamiltonian containing ferromagnetic or antiferromagnetic exchange interactions, D…
Optoelectronic excitations and photovoltaic effect in strongly correlated materials
John E. Coulter, Efstratios Manousakis, Adam Gali
Solar cells based on conventional semiconductors have low efficiency in converting solar energy into electricity because the excess energy beyond the gap of an incident solar photo…
Exact ground state for the four-electron problem in a 2D finite honeycomb lattice
Reka Trencsenyi, Konstantin Glukhov, Zsolt Gulacsi
Working in a subspace with dimensionality much smaller than the dimension of the full Hilbert space, we deduce exact 4-particle ground states in 2D samples containing hexagonal rep…
Theoretical unification of hybrid-DFT and DFT+U methods for the treatment of localized orbitals
Viktor Ivády, Rickard Armiento, Krisztián Szász +3
We formulate the on-site occupation dependent exchange correlation energy and effective potential of hybrid functionals for localized states and connect them to the on-site correct…
Hall effect of triplons in a dimerized quantum magnet
Judit Romhányi, Karlo Penc, R. Ganesh
The celebrated Shastry Sutherland model has a gapped dimer singlet ground state. The material SrCu(BO) serves as a good realization of this model, upto small anisotropi…