The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides
It is shown that the key role in the mechanism of high-Tc superconductivity in the layered cuprate metal-oxides with anisotropic quasi-two-dimensional electronic spectrum and d-wave symmetry of the superconducting order parameter is played by the retarded screened Coulomb interaction and many-bod...
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| Date: | 2006 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2006
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| Series: | Физика низких температур |
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| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/120194 |
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| Cite this: | The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides / E.A. Pashitskii, V.I. Pentegov // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 596–601. — Бібліогр.: 15 назв. — англ. |
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irk-123456789-1201942017-06-12T03:04:20Z The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides Pashitskii, E.A. Pentegov, V.I. Pseudogap It is shown that the key role in the mechanism of high-Tc superconductivity in the layered cuprate metal-oxides with anisotropic quasi-two-dimensional electronic spectrum and d-wave symmetry of the superconducting order parameter is played by the retarded screened Coulomb interaction and many-body correlations. We argue that the pseudogap observed in these materials is the anisotropic dielectric gap, which appears due to the electron-hole pairing on the flat portions of the Fermi surface in the vicinity of the extended saddle points in the quasiparticle spectrum. This gap coexists with the superconducting gap and is partially suppressed by scattering of current carriers on the charged point defects. The suppression of dielectric gap is analogous to the suppression of superconducting gap by magnetic impurities in «gapless» superconductors. The complete destruction of the pseudogap by charged impurities is assumed to increase Tc significantly. 2006 Article The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides / E.A. Pashitskii, V.I. Pentegov // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 596–601. — Бібліогр.: 15 назв. — англ. 0132-6414 PACS: 74.72.–h http://dspace.nbuv.gov.ua/handle/123456789/120194 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Pseudogap Pseudogap |
| spellingShingle |
Pseudogap Pseudogap Pashitskii, E.A. Pentegov, V.I. The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides Физика низких температур |
| description |
It is shown that the key role in the mechanism of high-Tc superconductivity in the layered
cuprate metal-oxides with anisotropic quasi-two-dimensional electronic spectrum and d-wave symmetry
of the superconducting order parameter is played by the retarded screened Coulomb interaction
and many-body correlations. We argue that the pseudogap observed in these materials is the
anisotropic dielectric gap, which appears due to the electron-hole pairing on the flat portions of
the Fermi surface in the vicinity of the extended saddle points in the quasiparticle spectrum. This
gap coexists with the superconducting gap and is partially suppressed by scattering of current carriers
on the charged point defects. The suppression of dielectric gap is analogous to the suppression
of superconducting gap by magnetic impurities in «gapless» superconductors. The complete destruction
of the pseudogap by charged impurities is assumed to increase Tc significantly. |
| format |
Article |
| author |
Pashitskii, E.A. Pentegov, V.I. |
| author_facet |
Pashitskii, E.A. Pentegov, V.I. |
| author_sort |
Pashitskii, E.A. |
| title |
The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides |
| title_short |
The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides |
| title_full |
The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides |
| title_fullStr |
The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides |
| title_full_unstemmed |
The role of the Coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides |
| title_sort |
role of the coulomb interaction in the formation of superconducting and pseudogap states in cuprate metal-oxides |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2006 |
| topic_facet |
Pseudogap |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/120194 |
| citation_txt |
The role of the Coulomb interaction in the formation of
superconducting and pseudogap states
in cuprate metal-oxides / E.A. Pashitskii, V.I. Pentegov // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 596–601. — Бібліогр.: 15 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT pashitskiiea theroleofthecoulombinteractionintheformationofsuperconductingandpseudogapstatesincupratemetaloxides AT pentegovvi theroleofthecoulombinteractionintheformationofsuperconductingandpseudogapstatesincupratemetaloxides AT pashitskiiea roleofthecoulombinteractionintheformationofsuperconductingandpseudogapstatesincupratemetaloxides AT pentegovvi roleofthecoulombinteractionintheformationofsuperconductingandpseudogapstatesincupratemetaloxides |
| first_indexed |
2025-07-08T17:25:07Z |
| last_indexed |
2025-07-08T17:25:07Z |
| _version_ |
1837100441879445504 |