Band structure mapping of bilayer graphene via quasiparticle scattering
Name
Band structure mapping.pdf
Size
316.98 KB
Format
Adobe PDF
Checksum (MD5)
32e101387266e4d054a470bb2e007730
Author(s)
Yankowitz, Matthew
Li, Suchun
Birdwell, A. Glen
Watanabe, Kenji
Taniguchi, Takashi
Quek, Su Ying
LeRoy, Brian J.
Wang, I-Jan
Chen, Yu-An
Jarillo-Herrero, Pablo
Date Issued
July 2014
Journal
APL Materials
Publisher
American Institute of Physics (AIP)
Citation
Yankowitz, Matthew; Wang, Joel I-Jan; Li, Suchun; Birdwell, A. Glen; Chen, Yu-An; Watanabe, Kenji; Taniguchi, Takashi; Quek, Su Ying; Jarillo-Herrero, Pablo and LeRoy, Brian J. “Band Structure Mapping of Bilayer Graphene via Quasiparticle Scattering.” APL Materials 2, no. 9 (September 2014): 092503.© 2014 Author(s)
Version
Original manuscript
Abstract
A perpendicular electric field breaks the layer symmetry of Bernal-stacked bilayer graphene, resulting in the opening of a band gap and a modification of the effective mass of the charge carriers. Using scanning tunneling microscopy and spectroscopy, we examine standing waves in the local density of states of bilayer graphene formed by scattering from a bilayer/trilayer boundary. The quasiparticle interference properties are controlled by the bilayer graphene band structure, allowing a direct local probe of the evolution of the band structure of bilayer graphene as a function of electric field. We extract the Slonczewski-Weiss-McClure model tight binding parameters as γ0 = 3.1 eV, γ1 = 0.39 eV, and γ4 = 0.22 eV.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/1.4890543
