Acoustic-phonon-mediated superconductivity in Bernal bilayer graphene

  title={Acoustic-phonon-mediated superconductivity in Bernal bilayer graphene},
  author={Yang-Zhi Chou and Fengcheng Wu and Jay Deep Sau and Sankar Das Sarma},
  journal={Physical Review B},
We present a systematic theory of acoustic-phonon-mediated superconductivity, which incorporates Coulomb repulsion, explaining the recent experiment in Bernal bilayer graphene under a large displacement field. The acoustic-phonon mechanism predicts that s-wave spin-singlet and f -wave spin-triplet pairings are degenerate and dominant. Assuming a spin-polarized valleyunpolarized normal state, we obtain f -wave spin-triplet superconductivity with a Tc ∼ 20 mK near ne = −0.6 × 10 cm−2 for hole… 
2 Citations

Figures from this paper

Spin-Orbit Enhanced Superconductivity in Bernal Bilayer Graphene
In the presence of a large perpendicular electric field, Bernal-stacked bilayer graphene (BLG) features several broken-symmetry metallic phases 1–3 as well as magnetic-field-induced superconductivity 1
Universal suppression of superfluid weight by disorder independent of quantum geometry and band dispersion
Alexander Lau , Sebastiano Peotta , Dmitry I. Pikulin , 4 Enrico Rossi , and Timo Hyart 1, 2 International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, Al. Lotników


  • Rev. Lett. 127, 187001
  • 2021
The master programme in Applied Geology aims to provide comprehensive knowledge based on various branches of Geology, with special focus on Applied geology subjects in the areas of Geomorphology, Structural geology, Hydrogeology, Petroleum Geologists, Mining Geology), Remote Sensing and Environmental geology.
Science 375
  • 774
  • 2022
Nature 598
  • 434
  • 2021
and s
and a at
  • The William Makepeace Thackeray Library
  • 2018
Isospin magnetism and spin-polarized superconductivity in Bernal bilayer graphene
In conventional superconductors, Cooper pairing occurs between electrons of opposite spin. We observe spin-polarized superconductivity in Bernal bilayer graphene when doped to a saddle-point van Hove
Bose–Einstein condensate-mediated superconductivity in graphene
Meng Sun, 2 A. V. Parafilo, K. H. A. Villegas, 3 V. M. Kovalev, 5 and I. G. Savenko 4 Center for Theoretical Physics of Complex Systems, Institute for Basic Science (IBS), Daejeon 34126, Korea Basic
Electric field–tunable superconductivity in alternating-twist magic-angle trilayer graphene
By tuning the doping level and displacement field, it is found that superconducting regimes occur in conjunction with flavor polarization of moiré bands and are bounded by a van Hove singularity at high displacement fields.
Flavour Hund's coupling, Chern gaps and charge diffusivity in moiré graphene.
This work investigates the broken-symmetry many-body ground state of magic-angle twisted bilayer graphene (MATBG) and its nontrivial topology using simultaneous thermodynamic and transport measurements and directly observes flavour symmetry breaking as pinning of the chemical potential at all integer fillings of the moiré superlattice.