Collapse of Ferrimagnetism in Two-Dimensional Heisenberg Antiferromagnet due to Frustration
نویسندگان
چکیده
منابع مشابه
N ov 1 99 4 RANDOM FRUSTRATION IN TWO - DIMENSIONAL SPIN - 1 / 2 HEISENBERG ANTIFERROMAGNET
The square lattice spin-1/2 antiferromagnet containing a dilute concentration, δ, of randomly placed ferromagnetic nearest-neighbor bonds is studied at low-temperature via nonlinear σ-model techniques and by exact diagonalization. We generally find that long-range Néel order is destroyed above a critical strength in the defective ferromagnetic exchange coupling-constant given by |Kc|/J ∼ δ . We...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2011
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.80.033709