Evolution of superconductivity in twisted graphene multilayers

M Long, A Jimeno-Pozo, H Sainz-Cruz… - Proceedings of the …, 2024 - pnas.org
The group of moiré graphene superconductors keeps growing, and by now it contains
twisted graphene multilayers as well as untwisted stacks. We analyze here the contribution …

Topological superconductivity in doped magnetic moiré semiconductors

V Crépel, D Guerci, J Cano, JH Pixley, A Millis - Physical review letters, 2023 - APS
We show that topological superconductivity may emerge upon do** of transition metal
dichalcogenide heterobilayers above an integer-filling magnetic state of the topmost valence …

Bridging the small and large in twisted transition metal dichalcogenide homobilayers: A tight binding model capturing orbital interference and topology across a wide …

V Crépel, A Millis - Physical Review Research, 2024 - APS
Many of the important phases observed in twisted transition metal dichalcogenide
homobilayers are driven by short-range interactions, which should be captured by a local …

Nodal band-off-diagonal superconductivity in twisted graphene superlattices

M Christos, S Sachdev, MS Scheurer - Nature Communications, 2023 - nature.com
The superconducting state and mechanism are among the least understood phenomena in
twisted graphene systems. Recent tunneling experiments indicate a transition between …

Interactions mediated by atoms, photons, electrons, and excitons

R Paredes, G Bruun, A Camacho-Guardian - Physical Review A, 2024 - APS
Interactions between quasiparticles mediated by a surrounding environment are ubiquitous
and lead to a range of important effects from collective modes of low-temperature quantum …

Magnonic superconductivity

KG Nazaryan, L Fu - Science Advances, 2024 - science.org
We uncover a superconducting state with partial spin polarization induced by a magnetic
field. This state, which we call “magnonic superconductor,” lacks a conventional pairing …

Enhanced superconductivity through virtual tunneling in Bernal bilayer graphene coupled to

YZ Chou, F Wu, S Das Sarma - Physical Review B, 2022 - APS
Motivated by a recent experiment (Y. Zhang, arxiv: 2205.05087), we investigate a possible
mechanism that enhances superconductivity in hole-doped Bernal bilayer graphene due to …

Spinon Pairing Induced by Chiral In-Plane Exchange and the Stabilization of Odd-Spin Chern Number Spin Liquid in Twisted

V Crépel, A Millis - Physical Review Letters, 2024 - APS
The unusual structure and symmetry of low-energy states in twisted transition metal
dichalcogenides leads to large in-plane spin-exchange interactions between spin-valley …

Superconductivity induced by strong electron-exciton coupling in doped atomically thin semiconductor heterostructures

J von Milczewski, X Chen, A Imamoglu, R Schmidt - Physical Review Letters, 2024 - APS
We study a mechanism to induce superconductivity in atomically thin semiconductors where
excitons mediate an effective attraction between electrons. Our model includes interaction …

Chiral model of twisted bilayer graphene realized in a monolayer

V Crépel, A Dunbrack, D Guerci, J Bonini, J Cano - Physical Review B, 2023 - APS
We demonstrate that a single layer of graphene subject to a superlattice potential nearly
commensurate to a 3× 3 supercell exactly maps to the chiral model of twisted bilayer …