• Open Access

Optical Hall response of bilayer graphene: Manifestation of chiral hybridized states in broken mirror symmetry lattices

V. Nam Do, H. Anh Le, V. Duy Nguyen, and D. Bercioux
Phys. Rev. Research 2, 043281 – Published 25 November 2020

Abstract

Understanding the mechanisms governing the optical activity of layered-stacked materials is crucial to the design of devices aimed at manipulating light at the nanoscale. Here, we show that both twisted and slid bilayer graphene are chiral systems that can deflect the polarization of linear polarized light. However, only twisted bilayer graphene supports circular dichroism. Our calculation scheme, which is based on the time-dependent Schrödinger equation, is particularly efficient for calculating the optical-conductivity tensor. Specifically, it allows us to show the chirality of hybridized states as the handedness-dependent bending of the trajectory of kicked Gaussian wave packets in bilayer lattices. We show that nonzero optical Hall conductivity is the result of the noncanceling manifestation of hybridized states in chiral lattices. We also demonstrate the continuous dependence of the conductivity tensor on the twist angle and the sliding vector.

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  • Received 28 September 2020
  • Accepted 2 November 2020

DOI:https://doi.org/10.1103/PhysRevResearch.2.043281

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.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Condensed Matter, Materials & Applied Physics

Authors & Affiliations

V. Nam Do1,*, H. Anh Le1, V. Duy Nguyen1, and D. Bercioux2,3,†

  • 1Phenikaa Institute for Advanced Study (PIAS), A1 Building, Phenikaa University, Hanoi 10000, Vietnam
  • 2Donostia International Physics Center (DIPC), Manuel de Lardizbal 4, E-20018 San Sebastían, Spain
  • 3IKERBASQUE, Basque Foundation of Science, 48011 Bilbao, Basque Country, Spain

  • *nam.dovan@phenikaa-uni.edu.vn
  • dario.bercioux@dipc.org

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Issue

Vol. 2, Iss. 4 — November - December 2020

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