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Cited by 493

The DOI matches its Crossref record; 61 of the 61 references it cites were found in a registry or an index.

Optical absorption in twisted bilayer graphene

Open access
Moon, Pilkyung, Koshino, Mikito·2013·Physical Review B
DOI 10.1103/physrevb.87.205404
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Abstract

We theoretically study the optical absorption property of twisted bilayer graphenes with various stacking geometries and demonstrate that the spectroscopic characteristics serve as a fingerprint to identify the rotation angle between two layers. We find that the absorption spectrum almost continuously evolves in changing the rotation angle, regardless of the lattice commensurability. The spectrum is characterized by series of peaks associated with the van Hove singularity, and the peak energies systematically shift with the rotation angle. We calculate the optical absorption in two frameworks: the tight-binding model and the effective continuum model based on the Dirac equation. For small rotation angles, less than ${10}^{\ensuremath{\circ}}$, the effective model well reproduces the low-energy band structure and the optical conductivity of the tight-binding model and, also, explains the optical selection rule analytically in terms of the symmetry of the effective Hamiltonian.

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Metadata

Authors
Moon, P., & Koshino, M.
Venue
Physical Review B
Publisher
American Physical Society (APS)
Published
2013-05-02
Volume
87
Issue
20
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
DOI
10.1103/physrevb.87.205404
OpenAlex
W2025108991
Cited by
493
References
61
FWCI
8.73
Type
journal article
Language
en
Open access
green

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

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