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Self‐Consistent‐Field Study of the Spin‐1/2 Dimerized Antiferromagnetic Heisenberg Chain
Author(s) -
Jiang XueFan,
Jiang Qing,
Li ZhenYa
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200005)219:1<151::aid-pssb151>3.0.co;2-8
Subject(s) - antiferromagnetism , hamiltonian (control theory) , physics , condensed matter physics , heisenberg model , ground state , zero temperature , chain (unit) , spin (aerodynamics) , quantum mechanics , mathematics , thermodynamics , mathematical optimization
A one‐dimensional spin‐1/2 dimerized linear antiferromagnetic Heisenberg chain is investigated basing on the continuum representation of the model Hamiltonian at zero temperature. The dependence of the energy gap and the energy density of the ground state upon the distortion strength of the model is obtained. It is shown that there exists a pure power‐law behavior, which is close to the results predicted by other authors.