English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Topological Floquet engineering of twisted bilayer graphene

Topp, G., Jotzu, G., McIver, J. W., Xian, L. D., Rubio, A., & Sentef, M. A. (2019). Topological Floquet engineering of twisted bilayer graphene. Physical Review Research, 1(2): 023031. doi:10.1103/PhysRevResearch.1.023031.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0003-E991-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-C8CB-6
Genre: Journal Article

Files

show Files
hide Files
:
PhysRevResearch.1.023031.pdf (Publisher version), 3MB
Name:
PhysRevResearch.1.023031.pdf
Description:
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2019
Copyright Info:
© the Author(s)

Locators

show
hide
Locator:
https://arxiv.org/abs/1906.12135 (Preprint)
Description:
-
Description:
-

Creators

show
hide
 Creators:
Topp, G.1, Author              
Jotzu, G.2, Author              
McIver, J. W.2, Author              
Xian, L. D.3, Author              
Rubio, A.3, 4, Author              
Sentef, M. A.1, Author              
Affiliations:
1Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
2Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
3Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
4Center for Computational Quantum Physics (CCQ),The Flatiron Institute, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: We investigate the topological properties of Floquet-engineered twisted bilayer graphene above the so-called magic angle driven by circularly polarized laser pulses. Employing a full Moiré-unit-cell tight-binding Hamiltonian based on first-principles electronic structure, we show that the band topology in the bilayer, at twisting angles above 1.05∘, essentially corresponds to the one of single-layer graphene. However, the ability to open topologically trivial gaps in this system by a bias voltage between the layers enables the full topological phase diagram to be explored, which is not possible in single-layer graphene. Circularly polarized light induces a transition to a topologically nontrivial Floquet band structure with the Berry curvature analogous to a Chern insulator. Importantly, the twisting allows for tuning electronic energy scales, which implies that the electronic bandwidth can be tailored to match realistic driving frequencies in the ultraviolet or midinfrared photon-energy regimes. This implies that Moiré superlattices are an ideal playground for combining twistronics, Floquet engineering, and strongly interacting regimes out of thermal equilibrium.

Details

show
hide
Language(s): eng - English
 Dates: 2019-06-282019-09-27
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: arXiv: 1906.12135
DOI: 10.1103/PhysRevResearch.1.023031
 Degree: -

Event

show

Legal Case

show

Project information

show hide
Project name : Discussions with S. A. Sato are gratefully acknowledged. G.E.T. and M.A.S. acknowledge financial support by the DFG through the Emmy Noether program (No. SE 2558/2-1). This work was supported by the European Research Council (No. ERC-2015-AdG694097). The Flatiron Institute is a division of the Simons Foundation.
Grant ID : -
Funding program : -
Funding organization : -

Source 1

show
hide
Title: Physical Review Research
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 1 (2) Sequence Number: 023031 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564