Weakly CoupledS=1/2 Quantum Heisenberg Antiferromagnetic Chains in an Effective Staggered Field
نویسندگان
چکیده
منابع مشابه
Midgap states in antiferromagnetic Heisenberg chains with a staggered field.
We study low-energy excitations in antiferromagnetic Heisenberg chains with a staggered field which splits the spectrum into a longitudinal and a transverse branch. Bound states are found to exist inside the field induced gap in both branches. They originate from the edge effects and are inherent to spin-chain materials. The sine-Gordon scaling h(2/3)(s)[log(h(s)](1/6) (h(s), the staggered fiel...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2002
ISSN: 0375-9687
DOI: 10.1143/ptps.145.212