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Theoretical Study of the Frustrated Ising Antiferromagnet on the Honeycomb Lattice
被引:3
|作者:
Bobak, A.
[1
]
Lucivjansky, T.
[1
,2
]
Zukovic, M.
[1
]
Borovsky, M.
[1
]
Balcerzak, T.
[3
]
机构:
[1] Safarik Univ, Fac Sci, Inst Phys, Pk Angelinum 9, Kosice 04154, Slovakia
[2] Univ Duisburg Essen, Fak Phys, D-47048 Duisburg, Germany
[3] Univ Lodz, Dept Solid State Phys, Pomorska 149-153, PL-90236 Lodz, Poland
关键词:
MODELS;
D O I:
10.12693/APhysPolA.131.636
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
We study effects of the next-next-nearest-neighbour antiferromagnetic (J(3) < 0) interaction on critical properties (or phase diagram) of the frustrated spin-1/2 J(1) - J(2) - J(3) Ising antiferromagnet on the honeycomb lattice by using the effective-field theory with correlations. Beside the ground-state energy, we find that there is a region of J(3) < 0 in which the frustrated honeycomb lattice antiferromagnet exhibits a tricritical point, at which the phase transition changes from the second order to the first one on the line between Neel antiferromagnetic and paramagnetic phases.
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页码:636 / 638
页数:3
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