Raman spectra of out-of-plane phonons in bilayer graphene

Kentaro Sato, Jin Sung Park, Riichiro Saito, Chunxiao Cong, Ting Yu, Chun Hung Lui, Tony F. Heinz, Gene Dresselhaus, and Mildred S. Dresselhaus
Phys. Rev. B 84, 035419 – Published 25 July 2011
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  • INTRODUCTION
  • CALCULATION METHOD
  • CALCULATED RESULTS AND DISCUSSION
  • SUMMARY
  • ACKNOWLEDGEMENTS
    • References

    Abstract

    The double resonance Raman spectra of the overtone of the out-of-plane tangential optical (oTO) phonon and of combinations of the LO, ZO, and ZA phonons with one another are calculated for bilayer graphene. In the case of the bilayer graphene, these Raman peaks are observed in the energy region between 1600 and 1800 cm−1. We obtain results for both the fixed q=0 and the dispersive q=2k peaks of the overtones of the oTO phonon of bilayer graphene. We calculate the double resonance Raman spectra of the combination modes coming from the LO, iTO, LA, and iTA phonons in bilayer graphene. The calculated Raman peaks are compared with the experimental results.

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    • Received 30 March 2011

    DOI:https://doi.org/10.1103/PhysRevB.84.035419

    ©2011 American Physical Society

    Authors & Affiliations

    Kentaro Sato1, Jin Sung Park2, Riichiro Saito1, Chunxiao Cong3, Ting Yu3,4, Chun Hung Lui5, Tony F. Heinz5, Gene Dresselhaus6, and Mildred S. Dresselhaus7,8

    • 1Department of Physics, Tohoku University, Sendai 980-8578, Japan
    • 2Faculty of Engineering, Shinshu University, Nagano 380-8553, Japan
    • 3Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
    • 4Department of Physics, Faculty of Science, National University of Singapore, 117542, Singapore
    • 5Department of Physics and Electrical Engineering, Columbia University, 538 West 120th Street, New York, NY 10027, USA
    • 6Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
    • 7Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4037, USA
    • 8Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA

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    Issue

    Vol. 84, Iss. 3 — 15 July 2011

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