Antiferromagnetic spin ladders - the case of odd numbers of spin- chains
David Schmeltzer; Ping Sun; David Schmeltzer; Physics Department, The City College, CUNY, Convent Avenue at 138 ST, New York, NY 10031, USA; Ping Sun; Physics Department, The City College, CUNY, Convent Avenue at 138 ST, New York, NY 10031, USA
Журнал:
Journal of Physics: Condensed Matter
Дата:
1998-05-25
Аннотация:
The problem of three coupled spin- antiferromagnetic chains has been investigated. Using the bosonization method we find that, regardless of the sign of the interchain coupling, the low-energy excitations are gapless. We show that the low-energy excitations are equivalent to those of the single antiferromagnetic Heisenberg chain.
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