92 citations · 1.2k across the 70 of their papers we have counts for
8 papers · 1 filter
Variational tensor network renormalization in imaginary time: Two-dimensional quantum compass model at finite temperature
Piotr Czarnik, Jacek Dziarmaga, Andrzej M. Oleś
Progress in describing thermodynamic phase transitions in quantum systems is obtained by noticing that the Gibbs operator for a two-dimensional (2D) lattice system with a…
Quantum entanglement in the one-dimensional spin-orbital SU(2) model
Wen-Long You, Peter Horsch, Andrzej M. Oleś
We investigate the phase diagram and the spin-orbital entanglement of a one-dimensional SU(2) model with SU(2) spin exchange and anisotropic orbital exchange int…
Coherent generation of symmetry-forbidden phonons by light-induced electron-phonon interactions in magnetite
Simone Borroni, Edoardo Baldini, Vamshi M. Katukuri +12
Symmetry breaking across phase transitions often causes changes in selection rules and emergence of optical modes which can be detected via spectroscopic techniques or generated co…
Charge transfer model for the electronic structure of layered ruthenates
Krzysztof Rościszewski, Andrzej M. Oleś
Motivated by the earlier experimental results and \textit{ab initio} studies on the electronic structure of layered ruthenates (SrRuO and CaRuO) we introduce and in…
Quantum phase transitions in the Kitaev--Heisenberg model on a single hexagon
Dorota Gotfryd, Andrzej M. Oleś
We present a detailed analysis of the Kitaev--Heisenberg model on a single hexagon. The energy spectra and spin--spin correlations obtained using exact diagonalisation indicate qua…
Polaron states in a CuO chain
Krzysztof Bieniasz, Andrzej M. Oleś
We introduce a one-dimensional model for a CuO chain, with holes and spins localized in orbitals, and oxygen orbitals without holes in the ground state…