Results 11 to 20 of about 116,736 (210)
Site dilution of quantum spins in the honeycomb lattice [PDF]
, 2005 We discuss the effect of site dilution on both the magnetization and the density of states of quantum spins in the honeycomb lattice, described by the antiferromagnetic Heisenberg spin-S model.
Anders W. Sandvik +10 more
core +2 more sources
New Journal of Physics, 2019 We analyze the antiferromagnetic spin-1/2 XXZ model on the kagome lattice at finite external magnetic field with the help of a non-perturbative zero-temperature renormalization group (RG) technique.
Santanu Pal +2 more
doaj +1 more source
Structure and Magnetization of Two-Dimensional Vortex Arrays in the Presence of Periodic Pinning [PDF]
, 2003 Ground-state properties of a two-dimensional system of superconducting vortices in the presence of a periodic array of strong pinning centers are studied analytically and numerically. The ground states of the vortex system at different filling ratios are
A. Abrikosov +28 more
core +2 more sources
Topological states in two-dimensional optical lattices [PDF]
, 2010 We present a general analysis of two-dimensional optical lattice models that give rise to topologically non-trivial insulating states. We identify the main ingredients of the lattice models that are responsible for the non-trivial topological character ...
Galitski, Victor +2 more
core +3 more sources
Quarks, Gluons and Frustrated Antiferromagnets [PDF]
, 1999 The Contractor Renormalization Group method (CORE) is used to establish the equivalence of various Hamiltonian free fermion theories and a class of generalized frustrated antiferromagnets.
C. J. Morningstar +10 more
core +2 more sources
Enhanced stability of bound pairs at nonzero lattice momenta
, 2003 A two-body problem on the square lattice is analyzed. The interaction potential consists of strong on-site repulsion and nearest-neighbor attraction. Exact pairing conditions are derived for s-, p-, and d-symmetric bound states.
A. S. Alexandrov +5 more
core +1 more source
Propagators of random walks on comb lattices of arbitrary dimension
, 2016 We study diffusion on comb lattices of arbitrary dimension. Relying on the loopless structure of these lattices and using first-passage properties, we obtain exact and explicit formulae for the Laplace transforms of the propagators associated to nearest ...
Bénichou, Olivier, Illien, Pierre
core +1 more source
Advanced Engineering Materials, EarlyView.The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi +3 more
wiley +1 more source
Phase Transitions in the Spin-Half J_1--J_2 Model [PDF]
, 1998 The coupled cluster method (CCM) is a well-known method of quantum many-body theory, and here we present an application of the CCM to the spin-half J_1--J_2 quantum spin model with nearest- and next-nearest-neighbour interactions on the linear chain and ...
A. V. Chubukov +57 more
core +3 more sources
Advanced Engineering Materials, EarlyView.This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo +3 more
wiley +1 more source