Predictive Study of the Rare Earth Double Perovskite Oxide Ba2ErReO6 and the Influence of the Hubbard Parameter U on its Half-Metallicity
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Superconductivity and Novel Magnetism"
DOI: 10.1007/s10948-021-06011-9
Abstract: In this paper, we have studied and carried out a theoretical calculation using the full-potential linearized augmented plane-wave method (FP-LAPW), based on density functional theory (DFT) and implemented in the wien2k program to investigate the… read more here.
Keywords: predictive study; ba2erreo6; double perovskite; hubbard parameter ... See more keywords
Flat-band ferromagnetism of SU(N) Hubbard model on Tasaki lattices
Sign Up to like & getrecommendations! Published in 2019 at "Science Bulletin"
DOI: 10.1016/j.scib.2019.08.013
Abstract: We investigate the para-ferro transition of the repulsive SU($N$) Hubbard model on one- and two-dimensional Tasaki lattices. Under certain restrictions for constructing localized many-particle ground states of flat-band ferromagnetism, the quantum strongly correlated electrons model… read more here.
Keywords: hubbard model; band ferromagnetism; flat band; tasaki ... See more keywords
Comparative analysis of assimilate synthesis, translocation and partitioning between two Cucurbita maxima cultivars “Atlantic giant” and “Hubbard”
Sign Up to like & getrecommendations! Published in 2021 at "Scientia Horticulturae"
DOI: 10.1016/j.scienta.2021.110411
Abstract: Abstract Atlantic Giant (AG), the world largest pumpkin, was bred through continuously crosses and strict selections from the small fruit ancestor. To understand the change caused by the artificial cross and selection in the recent… read more here.
Keywords: cucurbita maxima; comparative analysis; fruit; translocation ... See more keywords
Emergence of superconductivity in doped multiorbital Hubbard chains
Sign Up to like & getrecommendations! Published in 2020 at "npj Quantum Materials"
DOI: 10.1038/s41535-020-0228-2
Abstract: We introduce a variational state for one-dimensional two-orbital Hubbard models that intuitively explains the recent computational discovery of pairing in these systems when hole doped. Our ansatz is an optimized linear superposition of Affleck–Kennedy–Lieb–Tasaki valence-bond… read more here.
Keywords: state; valence bond; superconductivity doped; hubbard ... See more keywords
Validity of t–J approximation for extended Hubbard model with strong repulsion
Sign Up to like & getrecommendations! Published in 2017 at "Low Temperature Physics"
DOI: 10.1063/1.5010315
Abstract: It is shown that for finite cyclic systems described by two band Hubbard Hamiltonian with strong electron repulsion the reduction to effective t–J model may give incorrect description of the ground state symmetry due to… read more here.
Keywords: validity approximation; extended hubbard; model; approximation extended ... See more keywords
Magnetic properties of alternating Hubbard ladders
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.165127
Abstract: We investigate the Hubbard Hamiltonian on ladders where the number of sites per rung alternates between two and three. These geometries are bipartite with nonequal or equal number of sites on the two sublattices. Thus… read more here.
Keywords: alternating hubbard; long range; hubbard ladders; magnetic properties ... See more keywords
Dipole condensates in tilted Bose-Hubbard chains
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.107.195132
Abstract: We study the quantum phase diagram of a Bose-Hubbard chain whose dynamics conserves both boson number and boson dipole moment, a situation which can arise in strongly tilted optical lattices. The conservation of dipole moment… read more here.
Keywords: condensates tilted; hubbard; tilted bose; phase diagram ... See more keywords
Finite-temperature dynamics of the Mott insulating Hubbard chain
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.045146
Abstract: We study the dynamical response of the half-filled one-dimensional(1d) Hubbard model for a range of interaction strengths $U$ and temperatures $T$ by a combination of numerical and analytical techniques. Using time-dependent density matrix renormalization group… read more here.
Keywords: finite temperature; dynamics mott; temperature; temperature dynamics ... See more keywords
Pauli metallic ground state in Hubbard clusters with Rashba spin-orbit coupling
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.125103
Abstract: We study the "phase diagram" of a Hubbard plaquette with Rashba spin-orbit coupling. We show that the peculiar way in which Rashba coupling breaks the spin-rotational symmetry of the Hubbard model allows a mixing of… read more here.
Keywords: rashba spin; orbit coupling; spin orbit; ground state ... See more keywords
Effect of site dilution in the two-dimensional attractive Hubbard model
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.165142
Abstract: We study the percolative superconducting transition as the density of randomly placed attractive centers grows in a host metal. Employing the Hubbard-Stratanovich transformation for the interaction and allowing for spatial, thermal fluctuations of the pairing… read more here.
Keywords: site dilution; effect site; dilution two; hubbard ... See more keywords
Low-energy effective theory at a quantum critical point of the two-dimensional Hubbard model: Mean-field analysis
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.235131
Abstract: We complement previous functional renormalization group (fRG) studies of the two-dimensional Hubbard model by mean-field calculations. The focus falls on Van Hove filling and the the hopping amplitude t'/t=0.341. The fRG data suggest a quantum… read more here.
Keywords: energy; field; mean field; two dimensional ... See more keywords