Abstract. An efficient, semi-rigorous synchronous algorithm for parallel kinetic Monte Carlo simulations is presented. The accuracy and parallel efficiency are studied as a function of processor size, number of processors, and the ratio D/F of monomer hopping rate (D) to deposition rate (F ) for two different simple models of epitaxial growth. Since only local communication is required, the alg...

The ultrasonic transmission through plates perforated with 2 × 2 or 3 × 3 square array of subwavelength holes per unit cell are studied by numerical simulations. Calculations are obtained by means of a theoretical model under the rigid-solid assumption. It is demonstrated that when the inter-hole distance within the unit cell is reduced, new transmission dips appear resulting from Wood anomalie...

Vijay S. Pande†, Alexander Yu. Grosberg †‡, Chris Joerg§, Toyoichi Tanaka† †Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA ‡On leave from: Institute of Chemical Physics, Russian Academy of Sciences, Moscow 117977, Russia §Laboratory for Computer Science, Massachusetts Institute of Technology, Cam...

Magnetizations of R2Co14B single crystals with R = Nd and Pr have been measured under steady magnetic fields up to 300 kOe. We have shown that the observed data can be well reproduced by nearly the same set of crystalline field and R-3d exchange parameters as that in R2Fel4B system. Since the discovery of NdzFelsB, a wide variety of magnetization curves in high fields has been observed for diff...

Ferromagnetic honeycomb systems are known to exhibit a magnonic topological phase under the existence of next-nearest neighbor Dzyaloshinskii-Moriya interaction (DMI). Motivated by recent progress in sublattice-specific control magnetic anisotropy, we study magnon bands ferromagnetic monolayer and bilayer with sublattice symmetry breaking due different anisotropy energy presence DMI. We show th...

With Monte Carlo methods we investigate the dynamic relaxation of the fully frustrated XY model in two dimensions below or at the Kosterlitz-Thouless phase transition temperature. Special attention is drawn to the sublattice structure of the dynamic evolution. Short-time scaling behaviour is found and universality is confirmed. The critical exponent θ is measured for different temperature and w...

LaCo(2)As(2) can be synthesized as pure crystalline material by annealing a mixture of elements in Bi flux. The reaction, however, is accompanied by the incorporation of a small quantity of Bi into the structure and the formation of vacancies in the Co sublattice, which lead to substantial changes in structural and magnetic properties of the material.

A graded Holstein-Primakoff realization of the SU(2/1) algebra is proposed. A spin-wave theory with a condition that the sublattice magnetization is zero is discussed. It is shown that the generalized spin-wave theory is appropriate to investigate the long-range spiral (incommensurate) phase of the t − J model at T = 0. The spin-spin correlator is calculated.

We argue that the four-state Potts antiferromagnet has a finite-temperature phase transition on any Eulerian plane triangulation in which one sublattice consists of vertices of degree 4. We furthermore predict the universality class of this transition. We then present transfer-matrix and Monte Carlo data confirming these predictions for the cases of the Union Jack and bisected hexagonal lattices.

We have determined the magnetic structure of the Fe sublattice in YFe6Ge6 by highresolution neutron powder diffraction. The crystal space group is Cmcm and the magnetic space group is CPm′c′m′. The Fe modes are GX , G − X and G − X at the 8d, 8e and 8g sites, respectively. The easy direction of magnetization is [100] and the propagation vector is [010].