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arXiv:cond-mat/0206554 · Journal of the Physical Society of Japan

Fermionic Description of Spin-Gap States of Antiferromagnetic Heisenberg Ladders in a Magnetic Field

Hiromitsu Hori, Shoji Yamamoto

Published Jun 15, 2002• 6 citations
arXivHTMLPDF

Abstract

Employing the Jordan-Wigner transformation on a unique path and then making a mean-field treatment of the fermionic Hamiltonian, we semiquantitatively describe the spin-gap states of Heisenberg ladders in a field. The appearance of magnetization plateaux is clarified as a function of the number of legs.
DOI
10.1143/jpsj.71.1607

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