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Article: SU(4) spin-orbital two-leg ladder, square, and triangle lattices
Title | SU(4) spin-orbital two-leg ladder, square, and triangle lattices |
---|---|
Authors | |
Keywords | Physics |
Issue Date | 2002 |
Publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ |
Citation | Physical Review B (Condensed Matter), 2002, v. 66 n. 21, article no. 214516 , p. 1-5 How to Cite? |
Abstract | Based on the generalized valence bond picture, a Schwinger boson mean-field theory is applied to the symmetric SU(4) spin-orbital systems. For a two-leg SU(4) ladder, the ground state is a spin-orbital liquid with a finite energy gap, in good agreement with recent numerical calculations. In two-dimensional square and triangle lattices, the SU(4) Schwinger bosons condense at (τ/2,τ/2) and (τ/3,τ/3), respectively. Spin, orbital, and coupled spin-orbital static susceptibilities become singular at the wave vectors; the Bose condensation arises at twice this value. It is also demonstrated that there are spin, orbital, and coupled spin-orbital long-range orderings in the ground state. |
Persistent Identifier | http://hdl.handle.net/10722/43372 |
ISSN | |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Shen, SQ | en_HK |
dc.date.accessioned | 2007-03-23T04:44:28Z | - |
dc.date.available | 2007-03-23T04:44:28Z | - |
dc.date.issued | 2002 | en_HK |
dc.identifier.citation | Physical Review B (Condensed Matter), 2002, v. 66 n. 21, article no. 214516 , p. 1-5 | - |
dc.identifier.issn | 0163-1829 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/43372 | - |
dc.description.abstract | Based on the generalized valence bond picture, a Schwinger boson mean-field theory is applied to the symmetric SU(4) spin-orbital systems. For a two-leg SU(4) ladder, the ground state is a spin-orbital liquid with a finite energy gap, in good agreement with recent numerical calculations. In two-dimensional square and triangle lattices, the SU(4) Schwinger bosons condense at (τ/2,τ/2) and (τ/3,τ/3), respectively. Spin, orbital, and coupled spin-orbital static susceptibilities become singular at the wave vectors; the Bose condensation arises at twice this value. It is also demonstrated that there are spin, orbital, and coupled spin-orbital long-range orderings in the ground state. | en_HK |
dc.format.extent | 70662 bytes | - |
dc.format.extent | 34304 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | application/msword | - |
dc.language | eng | en_HK |
dc.publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ | en_HK |
dc.relation.ispartof | Physical Review B (Condensed Matter) | - |
dc.rights | Copyright 2002 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.66.214516 | - |
dc.subject | Physics | en_HK |
dc.title | SU(4) spin-orbital two-leg ladder, square, and triangle lattices | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=66&issue=21&spage=214516:1&epage=5&date=2002&atitle=SU(4)+spin-orbital+two-leg+ladder,+square,+and+triangle+lattices | en_HK |
dc.identifier.email | Shen, SQ: sshen@hkucc.hku.hk | en_HK |
dc.identifier.authority | Shen, SQ=rp00775 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1103/PhysRevB.66.214516 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0036975305 | en_HK |
dc.identifier.hkuros | 75848 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0036975305&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 66 | en_HK |
dc.identifier.issue | 21 | en_HK |
dc.identifier.spage | article no. 214516, p. 1 | - |
dc.identifier.epage | article no. 214516, p. 5 | - |
dc.identifier.isi | WOS:000180318800093 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Shen, SQ=7403431266 | en_HK |
dc.identifier.issnl | 0163-1829 | - |