KFU. Card publication. Quasiparticle operators for high-temperature cuprate superconductors

KAZAN
FEDERAL UNIVERSITY

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QUASIPARTICLE OPERATORS FOR HIGH-TEMPERATURE CUPRATE SUPERCONDUCTORS

Form of presentation

Articles in international journals and collections

Year of publication

2017

Язык

английский

Authors, employees of KFU

Eremin Mikhail Vasilevich, author

Bibliographic description in the original language

Eremin M.V., Quasiparticle operators for high-temperature cuprate superconductors//JETP Letters. - 2017. - Vol.105, Is.5. - P.341-345.

Annotation

A complete set of quasiparticle operators diagonalizing operators of the Coulomb and exchange interactions of copper and oxygen holes in cuprate high-temperature superconductors (HTSCs) is obtained. A scheme of energy bands in the regime of strong electron correlations is constructed. The effective operator for the singleband approximation is obtained with this scheme. It is found that the role of three-site correlations in hole HTSCs is negligibly small. This circumstance explains both the sharp increase in critical temperatures of hole HTSCs in comparison with electron-doped ones and the asymmetry between the spectra of collective spin excitations in these compounds.

Keywords

HTSC, cuprates

The name of the journal

JETP Letters

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019642536&doi=10.1134%2fS0021364017050071&partnerID=40&md5=1f657641781ef2247fa709140b4c63a8

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=159983&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Eremin Mikhail Vasilevich	ru_RU
dc.date.accessioned	2017-01-01T00:00:00Z	ru_RU
dc.date.available	2017-01-01T00:00:00Z	ru_RU
dc.date.issued	2017	ru_RU
dc.identifier.citation	Eremin M.V., Quasiparticle operators for high-temperature cuprate superconductors//JETP Letters. - 2017. - Vol.105, Is.5. - P.341-345.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=159983&p_lang=2	ru_RU
dc.description.abstract	JETP Letters	ru_RU
dc.description.abstract	A complete set of quasiparticle operators diagonalizing operators of the Coulomb and exchange interactions of copper and oxygen holes in cuprate high-temperature superconductors (HTSCs) is obtained. A scheme of energy bands in the regime of strong electron correlations is constructed. The effective operator for the singleband approximation is obtained with this scheme. It is found that the role of three-site correlations in hole HTSCs is negligibly small. This circumstance explains both the sharp increase in critical temperatures of hole HTSCs in comparison with electron-doped ones and the asymmetry between the spectra of collective spin excitations in these compounds.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	HTSC	ru_RU
dc.subject	cuprates	ru_RU
dc.title	Quasiparticle operators for high-temperature cuprate superconductors	ru_RU
dc.type	Articles in international journals and collections	ru_RU