Phys. Rev. B 59, 119–122 (1999)Ground-state magnetization of polymerized spin chainsReceived 11 September 1998; published in the issue dated 1 January 1999 We investigate the ground-state magnetization plateaus appearing in spin-1/2 polymerized Heisenberg chains under external magnetic fields. The associated fractional quantization scenario and the exponents which characterize the opening of gapful excitations are analyzed by means of Abelian bosonization methods. Our conclusions are fully supported by the extrapolated results obtained from Lanczos diagonalizations of finite systems. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.59.119
DOI:
10.1103/PhysRevB.59.119
PACS:
75.10.Jm, 75.60.Ej
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