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Progress of Theoretical Physics Supplement

Ground-State Phase Diagram of theS= 1/2 Distorted Diamond Type Spin Chain with Ferromagnetic Interactions

Kiyomi Okamoto, Takashi Tonegawa, Tsutoshi Yamada, M. Matsumoto, Mikito Koga, Tôru Sakai

Published Jan 1, 2005• 1 citation
Publisher

Abstract

We investigate, analytically and numerically, the ground state of the S = 1/2 distorted diamond type spin chain having three kinds of couplings, where one or two types of the couplings are ferromagnetic. We obtained the phase diagram at zero-magnetic field and also at Ms/3, where Ms is the saturation magnetization. We also discuss the plateau at (2/3)Ms.

DOI
10.1143/ptps.159.17

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