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- dc.contributor.author
- 박광렬
- dc.contributor.author
- 안설아
- dc.contributor.author
- 석성호
- dc.date.accessioned
- 2019-08-28T07:40:48Z
- dc.date.available
- 2019-08-28T07:40:48Z
- dc.date.issued
- 2009-01-15
- dc.identifier.issn
- 0374-4884
- dc.identifier.uri
- https://repository.kisti.re.kr/handle/10580/13811
- dc.identifier.uri
- http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART48641778
- dc.description.abstract
- Applying the functional Schroedinger picture to the Holstein-Primakoff boson theory, we obtain a dispersion energy relation for an antiferromagnetic spin polaron or magnon in two-dimensional systems of strongly correlated electrons. We show that our magnon ground-state wave function is equivalent to that of a retraceable path approximation by Reiter in the long-wavelength limit. Further, we demonstrate that the derived dispersion relation of a quasiparticle leads to the self-consistent Born approximation of the Green's function approach only in the large Heisenberg coupling J limit, showing that this new approach is general enough to contain more physical information than the Green's function approach in dealing with the antiferromagnetic spin polaron of interest.
- dc.language
- eng
- dc.relation.ispartofseries
- Journal of the Korean Physical Society
- dc.citation.endPage
- 162
- dc.citation.number
- 1
- dc.citation.startPage
- 157
- dc.citation.volume
- 54
- dc.subject.keyword
- Functional Schroedinger picture theory
- dc.subject.keyword
- Holstein-Primakoff boson theory
- dc.subject.keyword
- Dispersion energy relation
- dc.subject.keyword
- Antiferromagnetic spin polaron
- dc.subject.keyword
- Two-dimensional systems of strongly correlated electrons
- Appears in Collections:
- 7. KISTI 연구성과 > 학술지 발표논문
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