Discrete breathers and modulational instability in a discrete $$\varvec{\phi ^{4}}$$ϕ4 nonlinear lattice with next-nearest-neighbor couplings
Sign Up to like & getrecommendations! Published in 2017 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-017-3386-4
Abstract: The properties of discrete breathers and modulational instability in a discrete $$\phi ^{4}$$ϕ4 nonlinear lattice which includes the next-nearest-neighbor coupling interaction are investigated analytically. By using the method of multiple scales combined with a quasi-discreteness… read more here.
Keywords: discrete breathers; nearest neighbor; modulational instability; next nearest ... See more keywords
Thermodynamic properties of Heisenberg model for magnetic ordered graphene sheet
Sign Up to like & getrecommendations! Published in 2019 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2019.03.002
Abstract: Abstract We study the thermodynamic properties of two dimensional Heisenberg antiferromagnet on the honeycomb lattice in the presence of anisotropic Dzyaloshinskii-Moriya interaction and next nearest neighbor coupling exchange constant. A sublattice antiferromagnetic long range ordering… read more here.
Keywords: moriya interaction; dzyaloshinskii moriya; interaction; thermodynamic properties ... See more keywords
Diffusion on a one-dimensional sawtooth lattice with the nearest and the next nearest neighbor interactions
Sign Up to like & getrecommendations! Published in 2019 at "Physica A: Statistical Mechanics and its Applications"
DOI: 10.1016/j.physa.2018.09.162
Abstract: Abstract The diffusion of particles adsorbed on a homogeneous one-dimensional sawtooth lattice with the nearest neighbor and the next nearest neighbor interactions between the particles is investigated using a theoretical approach and the kinetic Monte… read more here.
Keywords: diffusion; neighbor interactions; one dimensional; next nearest ... See more keywords
Monte Carlo study of a ferrimagnetic mixed-spin (2, 5/2) system with the nearest and next-nearest neighbors exchange couplings
Sign Up to like & getrecommendations! Published in 2017 at "Superlattices and Microstructures"
DOI: 10.1016/j.spmi.2017.04.004
Abstract: Abstract In this paper, the effects of the next-nearest neighbors exchange couplings on the magnetic and thermal properties of the ferrimagnetic mixed-spin (2, 5/2) Ising model on a 3D honeycomb lattice have been investigated by… read more here.
Keywords: neighbors exchange; nearest neighbors; exchange couplings; next nearest ... See more keywords
The tight-binding formulation of the Kronig-Penney model
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-17223-2
Abstract: Electronic band structure calculations are frequently parametrized in tight-binding form; the latter representation is then often used to study electron correlations. In this paper we provide a derivation of the tight-binding model that emerges from… read more here.
Keywords: tight binding; next nearest; model; nearest neighbour ... See more keywords
Investigation of critical phenomena of the frustrated Ising model on a cubic lattice with next-nearest-neighbor intralayer interactions by the Monte Carlo method
Sign Up to like & getrecommendations! Published in 2018 at "Phase Transitions"
DOI: 10.1080/01411594.2017.1359836
Abstract: ABSTRACT Phase transitions and critical properties of the frustrated Ising model on a cubic lattice with next-nearest-neighbor intralayer interactions are investigated by the replica Monte Carlo method. Estimations are made for the magnitude relation of… read more here.
Keywords: nearest neighbor; frustrated ising; next nearest; ising model ... See more keywords
{X,Y}-Cyclacene Graphs with Next Nearest Neighbor Interactions
Sign Up to like & getrecommendations! Published in 2019 at "Polycyclic Aromatic Compounds"
DOI: 10.1080/10406638.2017.1293699
Abstract: ABSTRACT Eigensolutions of {X( = C,B,N),Y( = C,B,N)}-cyclacene graphs with next nearest neighbor (nnn) interactions have been obtained in analytical forms by adapting n-fold rotational symmetry followed by two-fold rotational symmetry (or a plane of… read more here.
Keywords: nearest neighbor; next nearest; nnn interactions; cyclacene graphs ... See more keywords
Nonstandard continualization of 1D lattice with next-nearest interactions. Low order ODEs and enhanced prediction of the dispersive behavior
Sign Up to like & getrecommendations! Published in 2020 at "Mechanics of Advanced Materials and Structures"
DOI: 10.1080/15376494.2020.1799271
Abstract: In this article, different standard and nonstandard continualization techniques are applied to a one-dimensional solid consisting in a chain of masses interacting with nearest and next-nearest neig... read more here.
Keywords: nearest interactions; continualization lattice; next nearest; lattice next ... See more keywords
Spectroscopic signatures of next-nearest-neighbor hopping in the charge and spin dynamics of doped one-dimensional antiferromagnets
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.075134
Abstract: We study the impact of next-nearest-neighbor (nnn) hopping on the low-energy collective excitations of strongly correlated doped antiferromagnetic cuprate spin chains. Specifically, we use exact diagonalization and the density matrix renormalization group method to study… read more here.
Keywords: spin; charge; spin charge; next nearest ... See more keywords
Enhancement of impact ionization in Hubbard clusters by disorder and next-nearest-neighbor hopping
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.245125
Abstract: We perform time-resolved exact diagonalization of the Hubbard model with time dependent hoppings on small clusters of up to $12$ sites. Here, the time dependence originates from a classic electromagnetic pulse, which mimics the impact… read more here.
Keywords: impact ionization; nearest neighbor; enhancement impact; next nearest ... See more keywords
Optimal inhomogeneity for pairing in Hubbard systems with next-nearest-neighbor hopping
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.064527
Abstract: Previous studies have shown that bipartite Hubbard systems with inhomogeneous hopping amplitudes can exhibit higher pair-binding energies than the uniform model. Here we examine whether this result holds for systems with a more generic band… read more here.
Keywords: nearest neighbor; inhomogeneity; next nearest; hubbard systems ... See more keywords