Journal ArticleDOI
Electronic Raman scattering in YBa2Cu4O8
TLDR
In this article, the electronic Raman scattering in YBa2Cu4O8 was investigated and it was shown that the normal state is strongly temperature-pendent in all polarizations.Abstract:
We report on the electronic Raman scattering in YBa2Cu4O8 and find that, In contrast to the other superconducting cuprates, the continuum in the normal state is strongly temperature ⪤pendent in all polarizations. This temperature dependence is found to follow a Bose-Einstein-like form. We conclude that the absence of the Bose-Einstein factor in the electronic continuum is not essential to high-Tc superconductivity, as is sometimes implied. Additionally, we report on the rearrangement of the continuum which occurs belowTc.read more
Citations
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Journal ArticleDOI
Electronic Raman scattering in high-temperature superconductors
TL;DR: In this article, the effects of temperature, impurity scattering, and resonance conditions on electronic Raman spectra in the superconducting state are analyzed, and the primary objective of the review is to establish how different peculiarities of the inelastic light scattering spectra are related to fundamental properties of the fundamental supercondensing state.
Journal ArticleDOI
Electronic Raman scattering in YBa2Cu4O8 at high pressure
TL;DR: In this article, the electronic Raman scattering in YBa2Cu4O8 at hydrostatic pressures up to 9 GPa was investigated and it was shown that the electronic continuum of the normal state becomes very weakly temperature dependent in all three configurations.
Book ChapterDOI
Chapter 203 Electronic and magnetic raman scattering studies of the high-Tc cuprates
TL;DR: In this article, a review of Raman scattering studies of the many diverse phases of high-T c superconductors is presented, focusing on scattering from two-magnon excitations, topological (chiral) spin, excitons, and crystal-field excitations.
Journal ArticleDOI
The superconducting and normal state gaps in YBa2Cu4O8: an electronic Raman scattering study
TL;DR: In this paper, the Raman spectra of a high quality YBa 2 Cu 4 O 8 single crystal grown in inert BaZrO 3 crucible have been measured and changes in the electronic background have been studied at temperatures from 10 to 300 K.
Journal ArticleDOI
Electronic Raman scattering on YBa2Cu4O8 (Y124)
M. Filzmoser,P. Wachter +1 more
TL;DR: In this article, the normal state electronic Raman scattering spectrum exhibits a broad maximum, whereas below T c the structure is resolved by subtracting the phononic fraction, which is in good agreement with the additional lines observed in the reflection spectra below Tc.
References
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Journal ArticleDOI
Phenomenology of the normal state of Cu-O high-temperature superconductors.
TL;DR: The universal anomalies in the normal state of Cu-O high-temperature superconductors follow from a single hypothesis: There exist charge- and spin-density excitations with the absorptive part of the polarizability at low frequencies proportional to T, where T is the temperature, and constant otherwise.
Journal ArticleDOI
Electronic Raman scattering in high-Tc superconductors: A probe of dx2-y2 pairing.
TL;DR: In this article, a theory for electronic Raman scattering in superconductors with pairing symmetry was proposed and the shape of the scattering intensity, as well as its change with temperature can be polarization dependent.
Journal ArticleDOI
Electrons, phonons, and their interaction in YBa2Cu3O7
Ole Krogh Andersen,A. I. Liechtenstein,O. Rodriguez,I. I. Mazin,Ove Jepsen,V. P. Antropov,Olle Gunnarsson,Sudha Gopalan +7 more
TL;DR: This article performed LDA calculations of structure, phonon frequencies, and electron-phonon interaction and found good agreement with available data and estimate: λ = 1.5.
Journal ArticleDOI
Two superconducting gaps and electron-phonon coupling in YBa2Cu4O8.
TL;DR: In this article, measurements of the superconducting gaps and the electron-phonon coupling in untwinned single crystals by electronic and phononic Raman scattering are reported.