Double-layer Heisenberg antiferromagnet at finite temperature: Brueckner theory and quantum Monte Carlo simulations | |
Article | |
关键词: GROUND-STATE; FIELD-THEORY; SPIN GAPS; SYSTEMS; YBA2CU3O7-DELTA; EXPANSIONS; TRANSITION; BEHAVIOR; SPECTRUM; DYNAMICS; | |
DOI : 10.1103/PhysRevB.61.3475 | |
来源: SCIE |
【 摘 要 】
The double-layer Heisenberg antiferromagnet with intra- and interlayer couplings J and J(perpendicular to) exhibits a zero-temperature quantum phase transition between a quantum disordered dimer phase for g>g(c) and a Neel phase with long-range antiferromagnetic order for g
【 授权许可】
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