Spin excitations in layered cuprates: a Fermi-liquid approach
We review some important aspects of the doping dependence of many physical properties of the high-Tc cuprates based on a Fermi liquid-like approach. In particular, we show that the spin fluctuation-mechanism of superconductivity on the basis of a microscopic Eliashberg approach supports the idea...
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| Date: | 2006 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2006
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| Series: | Физика низких температур |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/120209 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Spin excitations in layered cuprates: a Fermi-liquid approach / I.Eremin, D. Manske // Физика низких температур. — 2006. — Т. 32, № 6. — С. 683–699. — Бібліогр.: 45 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | We review some important aspects of the doping dependence of many physical properties of the
high-Tc cuprates based on a Fermi liquid-like approach. In particular, we show that the spin fluctuation-mechanism
of superconductivity on the basis of a microscopic Eliashberg approach supports
the idea that the symmetry of the superconducting order parameter is of dx₂₋y₂ -
wave type.
Furthermore, the renormalization of the quasiparticle spectrum caused by the scattering on spin
fluctuations results in the so-called kink feature seen in ARPES. The peculiar momentum dependence
of the spin fluctuations will result in a strong anisotropy of the renormalization at different
parts of the first Brillouin zone and thus will lead to a strong anisotropy of the kink. Another important
achievement of the microscopic Eliashberg approach is that the spin excitations spectrum
renormalizes strongly below Tc due to occurrence of superconductivity with a dx₂₋y₂ -wave order
parameter which yields to a formation of the so-called resonance peak that can be viewed as a spin
exciton. The topology of the Fermi surface and the momentum dependence of the superconducting. |
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