Symmetry-broken metallic orders in spin-orbit-coupled Bernal bilayer graphene
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866912148904476672 |
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| author | Koh, Jin Ming Thomson, Alex Alicea, Jason Lantagne-Hurtubise, Étienne |
| author_facet | Koh, Jin Ming Thomson, Alex Alicea, Jason Lantagne-Hurtubise, Étienne |
| contents | We explore Bernal bilayer graphene in the presence of long-range Coulomb interactions, short-range Hund's coupling, and proximity-induced Ising spin-orbit coupling using self-consistent Hartree-Fock simulations. We show that the interplay between these three ingredients produces an intricate phase diagram comprising a multitude of symmetry-broken metallic states tunable via doping and applied displacement field. In particular, we find intervalley coherent and spin-canted ground states that may hold the key to understanding spin-orbit-enabled superconductivity observed in this platform. We also investigate various phase transitions where a continuous $\mathrm{U}(1)$ symmetry is broken to ascertain the possible role of critical fluctuations on pairing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_09612 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Symmetry-broken metallic orders in spin-orbit-coupled Bernal bilayer graphene Koh, Jin Ming Thomson, Alex Alicea, Jason Lantagne-Hurtubise, Étienne Mesoscale and Nanoscale Physics Strongly Correlated Electrons Superconductivity We explore Bernal bilayer graphene in the presence of long-range Coulomb interactions, short-range Hund's coupling, and proximity-induced Ising spin-orbit coupling using self-consistent Hartree-Fock simulations. We show that the interplay between these three ingredients produces an intricate phase diagram comprising a multitude of symmetry-broken metallic states tunable via doping and applied displacement field. In particular, we find intervalley coherent and spin-canted ground states that may hold the key to understanding spin-orbit-enabled superconductivity observed in this platform. We also investigate various phase transitions where a continuous $\mathrm{U}(1)$ symmetry is broken to ascertain the possible role of critical fluctuations on pairing. |
| title | Symmetry-broken metallic orders in spin-orbit-coupled Bernal bilayer graphene |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2407.09612 |