Angle-Resolved Photoemission Spectroscopy Studies of Cuprate Superconductors

TL;DR

This paper reviews how angle-resolved photoemission spectroscopy (ARPES) has evolved into a key technique for studying the complex many-body physics underlying the phase diagram of cuprate superconductors, providing valuable experimental insights.

Contribution

It demonstrates the application of ARPES to uncover many-body interactions in cuprates, highlighting its development from basic band structure analysis to a crucial tool for high-temperature superconductor research.

Findings

ARPES reveals detailed electronic structure of cuprates.

Insights into many-body interactions in superconductors.

Evolution of ARPES as a vital research tool.

Abstract

This paper summarizes experimental results presented at the international conference honoring Prof. C.N. Yang's 80th birthday. I show seven examples that illustrate how one can use angle-resolved photoemission spectroscopy to gain insights into the many-body physics responsible for the rich phase diagram of cuprate superconductors. I hope to give the reader a snapshot of the evolution of this experimental technique from a tool to study chemical bonds and band structure to an essential many-body spectroscopy for one of the most important physics problems of our time.