Solvable models of spin-1/2 chains with an energy gap

Sasaki, Shosuke

doi:info:doi/10.1103/PhysRevE.53.168

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タイトル	Solvable models of spin-1/2 chains with an energy gap
著者	Sasaki, Shosuke Sasaki, Shosuke
抄録	An XY model with two kinds of coupling constants J and -K is investigated. The system has plural spin sites in a unit cell, where the coupling constant inside a unit cell is -K, and the coupling constant between two unit cells is J. When the number of the spin sites L in a unit cell is even (or odd), there is an energy gap (or no gap) between the ground state and the first excited state (for ‖K/J‖≠1). The magnetization of the system with any even number of L vanishes below a critical magnetic field at the temperature T=0. Therefore, the susceptibility is zero at T=0 when L is even, but the susceptibility is positive when L is odd. The data for the magnetization of (CH_3)_4N Ni (NO_2)_3 resemble the calculated value of the magnetization for L=2.
公開者	American Physical Society
掲載誌名	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
巻	53
号	1
開始ページ	168
終了ページ	178
刊行年月	1996-01-01
ISSN	15393755
DOI	info:doi/10.1103/PhysRevE.53.168
URL	http://hdl.handle.net/11094/27146
権利情報	Sasaki, Shosuke, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 53, 1, 168-178, 1996 of publication. "Copyright (1996) by the American Physical Society."
言語	英語
カテゴリ	学術雑誌論文 Journal Article

著者版フラグ	publisher
NII資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics.53(1) P.168-P.178
DC.title	Solvable models of spin-1/2 chains with an energy gap
DC.creator	Sasaki, Shosuke
DC.publisher	American Physical Society
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	1996-01-01
DC.identifier	info:doi/10.1103/PhysRevE.53.168
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/27146
DCTERMS.abstract	An XY model with two kinds of coupling constants J and -K is investigated. The system has plural spin sites in a unit cell, where the coupling constant inside a unit cell is -K, and the coupling constant between two unit cells is J. When the number of the spin sites L in a unit cell is even (or odd), there is an energy gap (or no gap) between the ground state and the first excited state (for ‖K/J‖≠1). The magnetization of the system with any even number of L vanishes below a critical magnetic field at the temperature T=0. Therefore, the susceptibility is zero at T=0 when L is even, but the susceptibility is positive when L is odd. The data for the magnetization of (CH_3)_4N Ni (NO_2)_3 resemble the calculated value of the magnetization for L=2.
DC.rights	Sasaki, Shosuke, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 53, 1, 168-178, 1996 of publication. "Copyright (1996) by the American Physical Society."
citation_title	Solvable models of spin-1/2 chains with an energy gap
citation_author	Sasaki, Shosuke
citation_publisher	American Physical Society
citation_language	英語
citation_date	1996-01-01
citation_journal_title	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
citation_volume	53
citation_issue	1
citation_firstpage	168
citation_lastpage	178
citation_issn	15393755
citation_doi	info:doi/10.1103/PhysRevE.53.168
citation_public_url	http://hdl.handle.net/11094/27146

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