| Title: |
Two-electron photoemission spectroscopy in Topological Superconductors |
| Authors: |
Wong, Ka Ho, Patwardhan, Ameya, Abbamonte, Peter, Mahmood, Fahad, Morr, Dirk K. |
| Publication Year: |
2022 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Superconductivity |
| More Details: |
We demonstrate that the photo-electron counting rate, $P^{(2)}$, measured in two electron coincidence spectroscopy (2$e$-ARPES) experiments, provides unprecedented insight into the nature of topological superconductivity. In particular, we show that the spin dependence of $P^{(2)}$ allows one to detect superconducting spin-triplet correlations that are induced in a topological superconductor even in the absence of an associated triplet superconducting order parameter. This ability to detect spin-triplet correlations allows one to distinguish between two recently proposed scenarios for the microscopic origin of topological superconductivity in FeSe$_{0.45}$Te$_{0.55}$. Finally, we show that $P^{(2)}$ exhibits a characteristic intensity maximum that can be employed to detect topological phase transitions. |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2210.11738 |
| Accession Number: |
edsarx.2210.11738 |
| Database: |
arXiv |
