Results 31 to 40 of about 266,938 (298)
npj Quantum Materials, 2021 The nature of the effective interaction responsible for pairing in the high-temperature superconducting cuprates remains unsettled. This question has been studied extensively using the simplified single-band Hubbard model, which does not explicitly ...
Peizhi Mai +3 more
doaj +1 more source
Ground-state phase diagram of the square lattice Hubbard model from density matrix embedding theory [PDF]
, 2015 We compute the ground-state phase diagram of the Hubbard and frustrated Hubbard models on the square lattice with density matrix embedding theory using clusters of up to 16 sites.
Chan, Garnet Kin-Lic, Zheng, Bo-Xiao
core +3 more sources
Classical Benchmarks for Variational Quantum Eigensolver Simulations of the Hubbard Model [PDF]
QuantumSimulating the Hubbard model is of great interest to a wide range of applications within condensed matter physics, however its solution on classical computers remains challenging in dimensions larger than one.
Antonios M. Alvertis +4 more
doaj +1 more source
Mesoscopic BCS pairing in the repulsive 1d-Hubbard model
, 2006 We study mesoscopic pairing in the one dimensional repulsive Hubbard model and its interplay with the BCS model in the canonical ensemble. The key tool is comparing the Bethe ansatz equations of the two models in the limit of small Coulomb repulsion. For
A. J. Leggett +9 more
core +1 more source
On integrability of the one-dimensional Hubbard model
Physics Letters B, 2023 We find a family of solutions to Zamolodchikov's tetrahedral algebra corresponding to the fermionic R-operator for the free fermion model of the difference type in one of the spectral parameters, construct an extension of the R-operator for a system of ...
A. Melikyan
doaj +1 more source
, 2011 We show that as the result of the nesting property of the Fermi surface, the quarter-doped Hubbard model on honeycomb lattice is unstable with respect to the formation of a magnetic insulating state with nonzero spin chirality for infinitesimally small ...
Li, Tao
core +1 more source
Metal-Insulator transitions in the periodic Anderson model [PDF]
, 2007 We solve the Periodic Anderson model in the Mott-Hubbard regime, using Dynamical Mean Field Theory. Upon electron doping of the Mott insulator, a metal-insulator transition occurs which is qualitatively similar to that of the single band Hubbard model ...
A. Amaricci +3 more
core +2 more sources
Recent Progress in Lattice Density Functional Theory
Computation, 2019 Recent developments in the density-functional theory of electron correlations in many-body lattice models are reviewed. The theoretical framework of lattice density-functional theory (LDFT) is briefly recalled, giving emphasis to its universality and to ...
T. S. Müller, W. Töws, G. M. Pastor
doaj +1 more source
Quantum Chaos in the Bose-Hubbard model
, 2004 We present a numerical study of the spectral properties of the 1D Bose-Hubbard model. Unlike the 1D Hubbard model for fermions, this system is found to be non-integrable, and exhibits Wigner-Dyson spectral statistics under suitable conditions.Comment: 4 ...
A Buchleitner +7 more
core +1 more source
Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)
Advanced Engineering Materials, EarlyView.Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho +8 more
wiley +1 more source