J1-J2quantum Heisenberg antiferromagnet: improved spin-wave theories versus exact-diagonalization data
نویسندگان
چکیده
منابع مشابه
J 2 quantum Heisenberg antiferromagnet : Improved spin - wave theories versus exact - diagonalization data
We reconsider the results cocerning the extreme-quantum S = 1/2 square-lattice Heisenberg antiferromagnet with frustrating diagonal couplings (J 1 − J 2 model) drawn from a comparison with exact-diagonalization data. A combined approach using also some intrinsic features of the self-consistent spin-wave theory leads to the conclusion that the theory strongly overestimates the stabilizing role o...
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ژورنال
عنوان ژورنال: Journal of Physics: Condensed Matter
سال: 1994
ISSN: 0953-8984,1361-648X
DOI: 10.1088/0953-8984/6/20/018