Results 41 to 50 of about 266,938 (298)
Metallicity in a Holstein-Hubbard Chain at Half Filling with Gaussian Anharmonicity
Scientific Reports, 2017 The Holstein-Hubbard model with Gaussian phonon anharmonicity is studied in one-dimension at half filling using a variational method based on a series of canonical transformations.
Ch. Uma Lavanya +2 more
doaj +1 more source
Performance, Growth Curves and Carcass Yield of Four Strains of Broiler Chicken [PDF]
Brazilian Journal of Poultry Science, 2019 The objective of this study was to evaluate the performance, carcass yield and growth curves of different commercial strains of broiler chicken. 2400 day-old chicks, males and females of the Cobb500, RossAp95, Hubbard Flex and a new Francesa line were ...
BRF Nogueira +6 more
doaj +1 more source
, 2004 We investigate the momentum distribution function near the Mott-Hubbard transition in the one-dimensional t1-t2 Hubbard model (the zig-zag Hubbard chain), with the density-matrix renormalization-group technique.
Aebischer C. +12 more
core +2 more sources
The conductivity tensor for the Hubbard model [PDF]
Physics Letters A, 1999 14 pages, 3 EPS figures, RevTeX, to be published in Physics Letters ...
MANCINI, Ferdinando, VILLANI D.
openaire +3 more sources
Advanced Functional Materials, EarlyView.A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu +9 more
wiley +1 more source
Phase transitions and spectral properties of the ionic Hubbard model in one dimension
, 2011 The ionic Hubbard model is investigated at half filling at zero temperature. We apply the cellular dynamical mean-field theory to the one-dimensional ionic Hubbard model to compute local quantities such as double occupancy and staggered charge density ...
Go, Ara, Jeon, Gun Sang
core +1 more source
Symmetries of an extended Hubbard Model [PDF]
Banach Center Publications, 1997 An extended Hubbard model with phonons is considered on a D-dimensional lattice. The symmetries of the model are studied in various cases. It is shown that for a certain choice of the parameters a superconducting SU_q(2) holds as a true quantum symmetry - but only for D=1.
Cerchiai, Bianca L., Schupp, Peter
openaire +2 more sources
From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts
Advanced Functional Materials, EarlyView.Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado +6 more
wiley +1 more source
Magnetic and Dynamic Properties of the Hubbard Model in Infinite Dimensions
, 1992 An essentially exact solution of the infinite dimensional Hubbard model is made possible by using a self-consistent mapping of the Hubbard model in this limit to an effective single impurity Anderson model.
A. Georges +32 more
core +1 more source
Hubbard–Shastry lattice models [PDF]
Journal of Physics A: Mathematical and Theoretical, 2012 v2: published ...
Frolov, Sergey, Quinn, Eoin
openaire +4 more sources