Interplay between many-body correlations, strain, and lattice relaxation in twisted bilayer graphene

Physical review. B./Physical review. B 2026 Open access

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Authors: Lorenzo Crippa, Gautam Rai, Dumitru Călugăru, Haoyu Hu, Jonah Herzog-Arbeitman, Bogdan Andrei Bernevig, Roser Valentí, Giorgio Sangiovanni, Tim Oliver Wehling
DOI: 10.1103/x2mz-hm8y
Cited by: 1
References: 55

Abstract

In twisted bilayer graphene, a unified understanding of the mechanisms governing temperature-dependent electronic spectra and thermodynamic properties remains controversial despite extensive theoretical efforts. Here, we present a comprehensive theoretical framework that quantitatively accounts for scanning tunneling spectroscopy, quantum twisting microscopy, and thermodynamic properties of magic angle twisted bilayer graphene. We demonstrate that the observed behavior arises from the interplay between electron correlations and external symmetry breaking induced by strain and lattice relaxation. These effects act cooperatively to shape the emergent electronic behavior, leaving characteristic signatures across spectroscopy, compressibility, and entropy.

Fields of Study & Subjects

Graphene research and applications Topological Materials and Phenomena Advanced Physical and Chemical Molecular Interactions

Publication details

Journal / source
Physical review. B./Physical review. B
Publisher
American Physical Society (APS)
Volume
113
Issue
24
Publication date
2 June 2026
Language
EN