Abstract
The discovery of the new high temperature superconductors has been at the origin of renewed interest in the physics of the 2-D quantum antife- rromagnet. At low temperatures La2CuO4and YBa2Cu3O6 are anisotropic insulating antiferromagnets with Neel temperatures of 245 and 415 °K, respectively1,2. The in-plane exchange constant is very large, J∥ ~ 2000°K, and the anisotropy ratio J ⊥/J∥ ~ 10-5 2. Due to this large anisotropy these compounds are very accurately bidimensional.
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© 1991 Plenum Press, New York
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Grempel, D.R. (1991). Magnetic Excitations in the Disordered Phase of the 2-D Heisenberg Antiferromagnet. In: Reiter, G., Horsch, P., Psaltakis, G.C. (eds) Dynamics of Magnetic Fluctuations in High-Temperature Superconductors. NATO ASI Series, vol 246. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7490-9_29
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DOI: https://doi.org/10.1007/978-1-4684-7490-9_29
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