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Title: Effect of super-exchange interaction on ground state magnetic properties of spin-dependent Falicov-Kimball model on a triangular lattice

Ground state magnetic properties are studied by incorporating the super-exchange interaction (J{sub se}) in the spin-dependent Falicov-Kimball model (FKM) between localized (f-) electrons on a triangular lattice for half filled case. Numerical diagonalization and Monte-Carlo simulation are used to study the ground state magnetic properties. We have found that the magnetic moment of (d-) and (f-) electrons strongly depend on the value of Hund’s exchange (J), super-exchange interaction (J{sub se}) and also depends on the number of (d-) electrons (N{sub d}). The ground state changes from antiferromagnetic (AFM) to ferromagnetic (FM) state as we decrease (N{sub d}). Also the density of d electrons at each site depends on the value of J and J{sub se}.
Authors:
; ;  [1] ;  [2]
  1. Department of Physics, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand (India)
  2. Center for Condensed Matter Theory, Indian Institute of Science, Bangalore-560012 (India)
Publication Date:
OSTI Identifier:
22490465
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; ATOMIC FORCE MICROSCOPY; COMPUTERIZED SIMULATION; ELECTRONS; EXCHANGE INTERACTIONS; FERROMAGNETISM; GROUND STATES; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MONTE CARLO METHOD; PHASE TRANSFORMATIONS; SPIN