Symmetry-broken metallic orders in spin-orbit-coupled Bernal bilayer graphene

被引:1
|
作者
Koh, Jin Ming [1 ,2 ]
Thomson, Alex [3 ]
Alicea, Jason [1 ,4 ]
Lantagne-Hurtubise, Etienne [1 ,4 ]
机构
[1] CALTECH, Dept Phys, Pasadena, CA 91125 USA
[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[3] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA
[4] CALTECH, Inst Quantum Informat & Matter, Pasadena, CA 91125 USA
基金
美国国家科学基金会;
关键词
QUANTUM; PHASE;
D O I
10.1103/PhysRevB.110.245118
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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 U(1) symmetry is broken to ascertain the possible role of critical fluctuations on pairing.
引用
收藏
页数:15
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