Angle-resolved photoemission studies of quantum materials

JA Sobota, Y He, ZX Shen - Reviews of Modern Physics, 2021 - APS
The physics of quantum materials is dictated by many-body interactions and mathematical
concepts such as symmetry and topology that have transformed our understanding of matter …

High-temperature superconductivity in iron pnictides and chalcogenides

Q Si, R Yu, E Abrahams - Nature Reviews Materials, 2016 - nature.com
Superconductivity develops in metals upon the formation of a coherent macroscopic
quantum state of electron pairs. Iron pnictides and chalcogenides are materials that have …

Orbital-selective superconductivity, gap anisotropy, and spin resonance excitations in a multiorbital -- model for iron pnictides

R Yu, JX Zhu, Q Si - Physical Review B, 2014 - APS
We study the orbital-selective superconducting pairing in a five-orbital tJ 1-J 2 model for iron
pnictides. Depending on the orbital selectivity of electron correlations and the orbital …

Orbital selectivity in electron correlations and superconducting pairing of iron-based superconductors

R Yu, H Hu, EM Nica, JX Zhu, Q Si - Frontiers in Physics, 2021 - frontiersin.org
Electron correlations play a central role in iron-based superconductors. In these systems,
multiple Fe 3 d-orbitals are active in the low-energy physics, and they are not all degenerate …