Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors / by Francisco Restrepo.

Format:

Book

Author/Creator:

Restrepo, Francisco, author.

Series:

Springer Theses, Recognizing Outstanding Ph.D. Research, 2190-5061

Language:

English

Subjects (All):

Superconductivity.

Superconductors.

Superconductors--Chemistry.

Spectrum analysis.

Quantum electrodynamics.

Spectroscopy.

Quantum Electrodynamics, Relativistic and Many-body Calculations.

Local Subjects:

Superconductivity.

Superconductors.

Spectroscopy.

Quantum Electrodynamics, Relativistic and Many-body Calculations.

Physical Description:

1 online resource (113 pages)

Edition:

1st ed. 2022.

Place of Publication:

Cham : Springer International Publishing : Imprint: Springer, 2022.

Summary:

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 applied the 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.

Contents:

Chapter 1. Introduction

Chapter 2. Superconductivity and the cuprates

Chapter 3. Angle-Resolved Photoemission Spectroscopy

Chapter 4. Experimental Details

Chapter 5. Results

Chapter 6. Conclusions.

Notes:

"Doctoral Thesis accepted by the University of Illinois at Chicago, USA."

Includes bibliographical references.

Other Format:

Print version: Restrepo, Francisco Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors

ISBN:

9783031109799