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

Journal Article · Tue Jul 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4923410· OSTI ID:22490752

Li, W. C.; Song, X.; Feng, J. J.; Zeng, M.; Gao, X. S.; Jia, X. T. ^[1]

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1. School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000 (China)

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.

• OSTI ID: 22490752
• Journal Information: Journal of Applied Physics, Vol. 118, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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