Exact Diagonalization for Magic-Angle Twisted Bilayer Graphene

We report on finite-size exact-diagonalization calculations in a Hilbert space defined by the continuum-model flat moiré bands of magic angle twisted bilayer graphene. For moiré band filling 3 > | ν | > 2 , where superconductivity is strongest, we obtain evidence that the ground state is a spi...

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Veröffentlicht in:	Physical review letters 2021-10, Vol.127 (14), p.1-147203, Article 147203
Hauptverfasser:	Potasz, Pawel, Xie, Ming, MacDonald, A. H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropy Bilayers CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Electronic structure Ferromagnetism Graphene Ground state Hilbert space Magnetic anisotropy Order parameters Physics Polarization (spin alignment) Superconductivity Topological materials
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