This thesis makes significant advances towards an understanding of superconductivity in the cuprate family of unconventional, high-temperature superconductors. Even though the high-temperature superconductors were discovered over 35 years ago, there is not yet a general consensus on an acceptable theory of superconductivity in these materials. One of the early proposals suggested that collective magnetic excitations of the conduction electrons could lead them to form pairs, which in turn condense to form the superconducting state at a critical temperature Tc. Quantitative calculations of Tc using experimental data were, however, not available to verify the applicability of this magnetic mechanism. In this thesis, the author constructed an angle-resolved photoemission apparatus that could provide sufficiently accurate data of the electronic excitation spectra of samples in the normal state, data which was furthermore unusually devoid of any surface contamination. The author also appliedthe Bethe-Salpeter method to his uncommonly pristine and precise normal state data, and was able to predict the approximate superconducting transition temperatures of different samples. This rare combination of experiment with sophisticated theoretical calculations leads to the conclusion that antiferromagnetic correlations are a viable candidate for the pairing interaction in the cuprate superconductors.
| ISBN: | 9783031109782 |
| Publication date: | 14th September 2022 |
| Author: | Francisco Restrepo |
| Publisher: | Springer International Publishing AG |
| Format: | Hardback |
| Pagination: | 104 pages |
| Series: | Springer Theses |
| Genres: |
Materials science Condensed matter physics (liquid state and solid state physics) Chemistry Spectrum analysis, spectrochemistry, mass spectrometry Quantum physics (quantum mechanics and quantum field theory) |
This thesis makes significant advances towards an understanding of superconductivity in the cuprate family of unconventional, high-temperature superconductors. Even though the high-temperature superconductors were discovered over 35 years ago, there is not yet a general consensus on an acceptable theory of superconductivity in these materials. One of the early proposals suggested that collective magnetic excitations of the conduction electrons could lead them to form pairs, which in turn condense to form the superconducting state at a critical temperature Tc. Quantitative calculations of Tc using experimental data were, however, not available to verify the applicability of this magnetic mechanism. In this thesis, the author constructed an angle-resolved photoemission apparatus that could provide sufficiently accurate data of the electronic excitation spectra of samples in the normal state, data which was furthermore unusually devoid of any surface contamination. The author also appliedthe Bethe-Salpeter method to his uncommonly pristine and precise normal state data, and was able to predict the approximate superconducting transition temperatures of different samples. This rare combination of experiment with sophisticated theoretical calculations leads to the conclusion that antiferromagnetic correlations are a viable candidate for the pairing interaction in the cuprate superconductors.
Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors features in the following genres: Materials science, Condensed matter physics (liquid state and solid state physics), Chemistry, Spectrum analysis, spectrochemistry, mass spectrometry, Quantum physics (quantum mechanics and quantum field theory)
Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors is available in Hardback
Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors was written by Francisco Restrepo and published by Springer International Publishing AG
Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors has 104 pages
Yes it is part of Springer Theses series
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