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Title: Random exchange interaction effects on the phase transitions in frustrated classical Heisenberg model

In this work, the effects of the random exchange interaction on the phase transitions and phase diagrams of classical frustrated Heisenberg model are investigated by Monte Carlo simulation in order to simulate the chemical doping effect in real materials. It is observed that the antiferromagnetic transitions shift toward low temperature with the increasing magnitude of the random exchange interaction, which can be qualitatively understood from the competitions among local spin states. This study is related to the magnetic properties in the doped iron-based superconductors.
Authors:
; ; ; ; ;  [1] ;  [2]
  1. Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006 (China)
  2. School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000 (China)
Publication Date:
OSTI Identifier:
22490752
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTIFERROMAGNETISM; COMPUTERIZED SIMULATION; DOPED MATERIALS; EXCHANGE INTERACTIONS; HEISENBERG MODEL; IRON; MAGNETIC PROPERTIES; MONTE CARLO METHOD; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; RANDOMNESS; SPIN; SUPERCONDUCTORS