Kumar, Sant and Yadav, Umesh K and Maitra, Tulika and Singh, Ishwar (2015) Effect of Super-exchange Interaction on Ground state Magnetic Properties of Spin-dependent Falicov-Kimball Model on a Triangular Lattice. In: 59th DAE Solid State Physics Symposium, DEC 16-20, 2014, VIT Univ, Vellore, INDIA.
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Ground state magnetic properties are studied by incorporating the super-exchange interaction (J(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(se)) and also depends on the number of (d-) electrons (N-d). The ground state changes from antiferromagnetic (AFM) to ferromagnetic (FM) state as we decrease (N-d). Also the density of d electrons at each site depends on the value of J and J(se).
| Item Type: | Conference Proceedings |
|---|---|
| Series.: | AIP Conference Proceedings |
| Publisher: | AMER INST PHYSICS |
| Additional Information: | Copy right for this article belongs to the AMER INST PHYSICS, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA |
| Keywords: | Correlated electron systems; triangular lattice; magnetism and magnetic ordering |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 14 Jan 2016 04:28 |
| Last Modified: | 14 Jan 2016 04:28 |
| URI: | http://eprints.iisc.ac.in/id/eprint/53115 |
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