Ordering in Triangular Lattice Ising Antiferromagnet Due to Dilution and Magnetic Field

• Authors: M. Žukovič , M. Borovský , A. Bobák
• Languages of publication: EN

Abstracts

EN

We study effects of an external magnetic field and random site dilution on the magnetic ordering in the geometrically frustrated triangular lattice Ising antiferromagnet by the use of an effective-field theory with correlations. In particular, we find that already a small amount of the quenched dilution locally relieves the frustration which in the presence of the external field is manifested by multiple splitting of a broad frustration-induced 1/3 magnetization plateau. Depending on the field strength, the dilution can either decrease or increase the magnetization or even change its effect from decreasing to increasing.

Keywords

EN

05.50.+q; 64.60.De; 75.10.Hk; 75.30.Kz; 75.50.Ee; 75.50.Lk

Discipline

• 75.10.Hk: Classical spin models
• 64.60.De: Statistical mechanics of model systems (Ising model, Potts model, field-theory models, Monte Carlo techniques, etc.)
• 75.50.Ee: Antiferromagnetics
• 75.50.Lk: Spin glasses and other random magnets
• 05.50.+q: Lattice theory and statistics (Ising, Potts, etc.)(see also 64.60.Cn Order-disorder transformations, and 75.10.Hk Classical spin models)
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 5
• Pages: 740-741

Dates

published

2010-11

Contributors

author

M. Žukovič

• Department of Theoretical Physics and Astrophysics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovak Republic

author

M. Borovský

• Department of Theoretical Physics and Astrophysics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovak Republic

author

A. Bobák

• Department of Theoretical Physics and Astrophysics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovak Republic

References

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Identifiers

DOI

10.12693/APhysPolA.118.740