31 citations · 90 across the 6 of their papers we have counts for
7 papers
The M-center in 4H-SiC is a carbon self-interstitial
J. Coutinho, J. D. Gouveia, T. Makino +5
The list of semiconductor materials with spectroscopically fingerprinted self-interstitials is very short. The M-center in 4H-SiC, a bistable defect responsible for a family of ele…
Can we rely on hybrid-DFT energies of solid-state problems with local-DFT geometries?
J. D. Gouveia, J. Coutinho
Hybrid functionals often improve considerably the accuracy of density-functional calculations, in particular of quantities resulting from the band structure. In plane-wave (PW) cal…
Time evolution of localized states in Lieb lattices
J. D. Gouveia, I. A. Maceira, R. G. Dias
We study the slow time evolution of localized states of the open-boundary Lieb lattice when a magnetic flux is applied perpendicularly to the lattice and increased linearly in time…
Spin and charge density waves in the Lieb lattice
J. D. Gouveia, R. G. Dias
We study the mean-field phase diagram of the two-dimensional (2D) Hubbard model in the Lieb lattice allowing for spin and charge density waves. Previous studies of this diagram hav…
Spiral ferrimagnetic phases in the two-dimensional Hubbard model
J. D. Gouveia, R. G. Dias
We address the possibility of spiral ferrimagnetic phases in the mean-field phase diagram of the two-dimensional (2D) Hubbard model. For intermediate values of the interaction …
Magnetic phase diagram of the Hubbard model in the Lieb lattice
J. D. Gouveia, R. G. Dias
We study the mean-field phase diagram of the repulsive Hubbard model in the Lieb lattice. Far from half-filling, the most stable phases are paramagnetism for low on-site interactio…
Origami rules for the construction of localized eigenstates of the Hubbard model in decorated lattices
R. G. Dias, J. D. Gouveia
We present a method of construction of exact localized many-body eigenstates of the Hubbard model in decorated lattices, both for and . These states are l…