Quantum Localization in Bilayer Heisenberg Antiferromagnets with Site Dilution
Quantum Localization in Bilayer Heisenberg Antiferromagnets with Site Dilution
The field-induced antiferromagnetic ordering in systems of weakly coupled S=1/2 dimers at zero temperature can be described as a Bose-Einstein condensation of triplet quasiparticles (singlet quasiholes) in the ground state. For the case of a Heisenberg bilayer, it is here shown how the above picture is altered in the presence …