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Article: Phase separation and charge ordering in doped manganite perovskites: Projection perturbation and mean-field approaches
Title | Phase separation and charge ordering in doped manganite perovskites: Projection perturbation and mean-field approaches |
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Authors | |
Keywords | Physics |
Issue Date | 2000 |
Publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ |
Citation | Physical Review B (Condensed Matter), 2000, v. 61 n. 14, p. 9532-9541 How to Cite? |
Abstract | A theory is developed to explain various types of electronic collective behaviors in doped manganites R 1-xX xMnO 3 (R = La, Pr, Nd, etc. and X=Ca, Sr, Ba, etc.). Starting from a realistic electronic model, we derive an effective Hamiltonian by utilizing the projection perturbation techniques and develop a spin-charge-orbital coherent-state theory, in which the Jahn-Teller effect and the orbital degeneracy of e g electrons in Mn ions are taken into account. Physically, the experimentally observed charge-ordering state and electronic phase separation are two macroscopic quantum phenomena with opposite physical mechanisms, and their physical origins are elucidated in this theory. The interplay of the Jahn-Teller effect, the lattice distortion, as well as the double-exchange mechanism leads to different magnetic structures and to different charge-ordering patterns and phase separation. ©2000 The American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/43288 |
ISSN | |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Shen, SQ | en_HK |
dc.contributor.author | Wang, ZD | en_HK |
dc.date.accessioned | 2007-03-23T04:42:56Z | - |
dc.date.available | 2007-03-23T04:42:56Z | - |
dc.date.issued | 2000 | en_HK |
dc.identifier.citation | Physical Review B (Condensed Matter), 2000, v. 61 n. 14, p. 9532-9541 | - |
dc.identifier.issn | 0163-1829 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/43288 | - |
dc.description.abstract | A theory is developed to explain various types of electronic collective behaviors in doped manganites R 1-xX xMnO 3 (R = La, Pr, Nd, etc. and X=Ca, Sr, Ba, etc.). Starting from a realistic electronic model, we derive an effective Hamiltonian by utilizing the projection perturbation techniques and develop a spin-charge-orbital coherent-state theory, in which the Jahn-Teller effect and the orbital degeneracy of e g electrons in Mn ions are taken into account. Physically, the experimentally observed charge-ordering state and electronic phase separation are two macroscopic quantum phenomena with opposite physical mechanisms, and their physical origins are elucidated in this theory. The interplay of the Jahn-Teller effect, the lattice distortion, as well as the double-exchange mechanism leads to different magnetic structures and to different charge-ordering patterns and phase separation. ©2000 The American Physical Society. | en_HK |
dc.format.extent | 135038 bytes | - |
dc.format.extent | 45056 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 2000 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.61.9532 | - |
dc.subject | Physics | en_HK |
dc.title | Phase separation and charge ordering in doped manganite perovskites: Projection perturbation and mean-field approaches | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=61&issue=14&spage=9532&epage=9541&date=2000&atitle=Phase+separation+and+charge+ordering+in+doped+manganite+perovskites:+Projection+perturbation+and+mean-field+approaches | en_HK |
dc.identifier.email | Shen, SQ: sshen@hkucc.hku.hk | en_HK |
dc.identifier.email | Wang, ZD: zwang@hkucc.hku.hk | en_HK |
dc.identifier.authority | Shen, SQ=rp00775 | en_HK |
dc.identifier.authority | Wang, ZD=rp00802 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1103/PhysRevB.61.9532 | en_HK |
dc.identifier.scopus | eid_2-s2.0-4243709641 | en_HK |
dc.identifier.hkuros | 48423 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-4243709641&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 61 | en_HK |
dc.identifier.issue | 14 | en_HK |
dc.identifier.spage | 9532 | en_HK |
dc.identifier.epage | 9541 | en_HK |
dc.identifier.isi | WOS:000086441800051 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Shen, SQ=7403431266 | en_HK |
dc.identifier.scopusauthorid | Wang, ZD=14828459100 | en_HK |
dc.identifier.issnl | 0163-1829 | - |