期刊
PHYSICAL REVIEW LETTERS
卷 86, 期 9, 页码 1849-1852出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.1849
关键词
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At small layer separations. the ground state of a V = 1 bilayer quantum Hall system exhibits spontaneous interlayer phase coherence. The evolution of this state with increasing layer separation d has been a matter of controversy. We report on small system exact diagonalization calculations which suggest that a single-phase transition, likely of first order, separates incompressible states with strong interlayer correlations from compressible states with weak interlayer correlations. We find a dependence of the phase boundary on d and interlayer tunneling amplitude that is in very good agreement with recent experiments.
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