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13 papers · 1 filter
Hysteresis behavior of the anisotropic quantum Heisenberg model driven by periodic magnetic field
Ümit Akıncı
Dynamic behavior of a quantum Heisenberg ferromagnet in the presence of a periodically oscillating magnetic field has been analyzed by means of the effective field theory with two…
Differentiation of Bulk and Surface Events in p-type Point-Contact Germanium Detectors for Light WIMP Searches
H. B. Li, the TEXONO Collaboration
The p-type point-contact germanium detectors are novel techniques offering kg-scale radiation sensors with sub-keV sensitivities. They have been used for light Dark Matter WIMPs se…
Random Field Distributed Heisenberg Model on a Thin Film Geometry
Ümit Akıncı
The effects of the bimodal random field distribution on the thermal and magnetic properties of of the Heisenberg thin film have been investigated by making use of a two spin cluste…
Critical Binder cumulant and universality: Fortuin-Kasteleyn clusters and order-parameter fluctuations
A. Malakis, N. G. Fytas, G. Gülpinar
We investigate the dependence of the critical Binder cumulant of the magnetization and the largest Fortuin-Kasteleyn cluster on the boundary conditions and aspect ratio of the unde…
Monte Carlo simulations of dynamic phase transitions in ultrathin Blume-Capel films
Yusuf Yuksel
Dynamic phase transition phenomena in ultrathin films described by Blume-Capel model have been investigated using Monte Carlo simulations. Hysteresis loops, micromagnetic structure…
Universality Aspects of Layering Transitions in Ferromagnetic Blume-Capel Thin Films
Yusuf Yuksel, Umit Akinci
Critical phenomena and universality behavior of ferromagnetic thin films described by a spin-1 Blume-Capel Hamiltonian has been examined for various thickness values ranging from 3…