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 …

Even odder after twenty-three years: the superconducting order parameter puzzle of Sr2RuO4

AP Mackenzie, T Scaffidi, CW Hicks, Y Maeno - npj Quantum Materials, 2017 - nature.com
In this short review, we aim to provide a topical update on the status of efforts to understand
the superconductivity of Sr2RuO4. We concentrate on efforts to identify a superconducting …

Constraints on the superconducting order parameter in Sr2RuO4 from oxygen-17 nuclear magnetic resonance

A Pustogow, Y Luo, A Chronister, YS Su, DA Sokolov… - Nature, 2019 - nature.com
Phases of matter are usually identified through spontaneous symmetry breaking, especially
regarding unconventional superconductivity and the interactions from which it originates. In …

Chiral superconductors

C Kallin, J Berlinsky - Reports on Progress in Physics, 2016 - iopscience.iop.org
Chiral superconductivity is a striking quantum phenomenon in which an unconventional
superconductor spontaneously develops an angular momentum and lowers its free energy …

Thermodynamic evidence for a two-component superconducting order parameter in Sr2RuO4

S Ghosh, A Shekhter, F Jerzembeck, N Kikugawa… - Nature Physics, 2021 - nature.com
Sr2RuO4 has stood as the leading candidate for a spin-triplet superconductor for 26 years.
However, recent NMR experiments have cast doubt on this candidacy, and it is difficult to …

Stabilizing even-parity chiral superconductivity in

HG Suh, H Menke, PMR Brydon, C Timm… - Physical Review …, 2020 - APS
Strontium ruthenate (Sr 2 RuO 4) has long been thought to host a spin-triplet chiral p-wave
superconducting state. However, the singletlike response observed in recent spin …

Evidence for even parity unconventional superconductivity in Sr2RuO4

A Chronister, A Pustogow… - Proceedings of the …, 2021 - National Acad Sciences
Unambiguous identification of the superconducting order parameter symmetry in Sr 2 RuO 4
has remained elusive for more than a quarter century. While a chiral p-wave ground state …

High-Resolution Photoemission on Reveals Correlation-Enhanced Effective Spin-Orbit Coupling and Dominantly Local Self-Energies

A Tamai, M Zingl, E Rozbicki, E Cappelli, S Riccò… - Physical Review X, 2019 - APS
We explore the interplay of electron-electron correlations and spin-orbit coupling in the
model Fermi liquid Sr 2 RuO 4 using laser-based angle-resolved photoemission …

Spintronics meets orbitronics: Emergence of orbital angular momentum in solids

D Jo, D Go, GM Choi, HW Lee - npj Spintronics, 2024 - nature.com
One of the ultimate goals of spintronics is to realize an efficient electrical manipulation of
spin for high-speed and low-power nanodevices. A core ingredient for achieving this goal is …

Vertical Line Nodes in the Superconducting Gap Structure of

E Hassinger, P Bourgeois-Hope, H Taniguchi… - Physical Review X, 2017 - APS
There is strong experimental evidence that the superconductor Sr 2 RuO 4 has a chiral p-
wave order parameter. This symmetry does not require that the associated gap has nodes …