UM  > INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Residential Collegefalse
Status已發表Published
Layer Hall counterflow as a model probe of magic-angle twisted bilayer graphene
Zhu, Jihang1,2; Zhai, Dawei3,4; Xiao, Cong5; Yao, Wang3,4
2024-04-03
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
Volume109Issue:15Pages:155114
Abstract

The recent constructions of flat moiré minibands in specifically twisted multilayer graphene and twisted transition metal dichalcogenides (TMDs) have facilitated the observation of strong correlations with convenient tunability. These correlations in flat bands result in band dispersion heavily influenced by carrier densities, leading to filling-dependent quasiparticle band renormalizations. Particularly, in magic-angle twisted bilayer graphene (MATBG), the band structure - including the quasiparticle energy and wave function - is crucial in understanding the correlated properties. Previous theoretical studies have demonstrated the presence of a time-reversal-even charge Hall counterflow in response to a direct current (DC) electric field in twisted bilayers as chiral structures. In this study, we show that such layer Hall counterflow can serve as a sensitive probe for MATBG model parameters, which are currently ambiguous as a result of unavoidable structural relaxation and twist-angle disorder. We present the layer Hall counterflow and the associated in-plane magnetization for three different MATBG continuum models, based on which many-body interacting models have been widely applied to study strong correlations in MATBG. At the single-particle level, our findings indicate notable differences in layer-projected Hall conductivity, both in magnitude and sign, between different MATBG continuum models. Furthermore, our self-consistent Hartree calculations, performed on each of these single-particle continuum models, reveal renormalized layer-projected Hall conductivity by the self-consistent Hartree field.

DOI10.1103/PhysRevB.109.155114
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:001229778700003
PublisherAMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844
Scopus ID2-s2.0-85189283600
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorZhu, Jihang
Affiliation1.Condensed Matter Theory Center, Joint Quantum Institute, Department of Physics, University of Maryland, College Park, 20742, United States
2.Max Planck Institute for the Physics of Complex Systems, Dresden, 01187, Germany
3.New Cornerstone Science Laboratory, Department of Physics, The University of Hong Kong, Hong Kong, Hong Kong
4.HKU-UCAS Joint Institute of Theoretical and Computational Physics at Hong Kong, Hong Kong, Hong Kong
5.Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao
Recommended Citation
GB/T 7714
Zhu, Jihang,Zhai, Dawei,Xiao, Cong,et al. Layer Hall counterflow as a model probe of magic-angle twisted bilayer graphene[J]. PHYSICAL REVIEW B, 2024, 109(15), 155114.
APA Zhu, Jihang., Zhai, Dawei., Xiao, Cong., & Yao, Wang (2024). Layer Hall counterflow as a model probe of magic-angle twisted bilayer graphene. PHYSICAL REVIEW B, 109(15), 155114.
MLA Zhu, Jihang,et al."Layer Hall counterflow as a model probe of magic-angle twisted bilayer graphene".PHYSICAL REVIEW B 109.15(2024):155114.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhu, Jihang]'s Articles
[Zhai, Dawei]'s Articles
[Xiao, Cong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhu, Jihang]'s Articles
[Zhai, Dawei]'s Articles
[Xiao, Cong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhu, Jihang]'s Articles
[Zhai, Dawei]'s Articles
[Xiao, Cong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.