Publication
Title
Elastic screening of pseudogauge fields in graphene
Author
Abstract
Lattice deformations in graphene couple to the low-energy electronic degrees of freedom as effective scalar and gauge fields. Using molecular dynamics simulations, we show that the optical component of the displacement field, i.e., the relative motion of different sublattices, contributes at equal order as the acoustic component and effectively screens the pseudogauge fields. In particular, we consider twisted bilayer graphene and corrugated monolayer graphene. In both cases, optical lattice displacements significantly reduce the overall magnitude of the pseudomagnetic fields. For corrugated graphene, optical contributions also reshape the pseudomagnetic field and significantly modify the electronic bands near charge neutrality. Previous studies based on continuum elasticity, which ignores this effect, have therefore systematically overestimated the strength of the strain-induced pseudomagnetic field. Our results have important consequences for the interpretation of experiments and design of straintronic applications.
Language
English
Source (journal)
Physical review letters. - New York, N.Y., 1958, currens
Publication
New York, N.Y. : American Physical Society , 2025
ISSN
0031-9007 [print]
1079-7114 [online]
DOI
10.1103/PHYSREVLETT.134.046404
Volume/pages
134 :4 (2025) , p. 1-8
Article Reference
046404
ISI
001438435400015
Pubmed ID
39951590
Medium
E-only publicatie
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Project info
Flat bands and electron correlations in graphene.
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Record
Identifier c:irua:213197
Creation 02.04.2025
Last edited 22.04.2025
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