Bosonic representation of one-dimensional Heisenberg ferrimagnets

Yamamoto, Shoji

PHYSICAL REVIEW B, 2004, 69, 064426

Permalink : https://hdl.handle.net/2115/5863

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アクセス権	open access
URI	https://hdl.handle.net/2115/5863
タイトル	Bosonic representation of one-dimensional Heisenberg ferrimagnets
著者	e-Rad_Researcher 90252551 著者名 Yamamoto, Shoji 山本, 昌司
言語	英語
発行日	2004
出版者	American Physical Society
収録物名	PHYSICAL REVIEW B
巻(号)	69
ページ	064426
抄録	We present a comparative study of bosonic languages to describe one-dimensional Heisenberg ferrimagnets. The ferrimagnetic Schwinger-boson mean-field theory demonstrated by Wu et al., the antiferromagnetic modified spin-wave theory designed by Takahashi, and its ferrimagnetic variant proposed by Yamamoto et al. are employed to calculate the energy structure and the thermodynamics of various ferrimagnets. A modified spin-wave scheme, which introduces a Lagrange multiplier keeping the native energy structure free from temperature and thus differs from the original Takahashi scheme, is particularly stressed as a useful tool to investigate one-dimensional quantum ferrimagnetism. The antiferromagnetic limit of these descriptions is also considered.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright © 2004 American Physical Society
PISSN	1098-0121
関連情報	URI http://www.aps.org/
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevB.69.064426