Polarization dependence of x-ray absorption spectra in graphene
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Chowdhury-2012-Polarization dependence of.pdf
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Author(s)
Dresselhaus, Mildred
Chowdhury, M. T.
Saito, Riichiro
Date Issued
March 2012
Journal
Physical Review B
Publisher
American Physical Society
Citation
Chowdhury, M., R. Saito, and M. Dresselhaus. “Polarization Dependence of X-ray Absorption Spectra in Graphene.” Physical Review B 85.11 (2012): 115410. © 2012 American Physical Society
Version
Final published version
Abstract
We calculate the x-ray absorption spectra (XAS) for 1s-π
∗ and 1s-σ
∗ transitions in single layer graphene
using the dipole approximation and we compare with experimental results. It is found that the in-plane and out-of-plane orientations of the dipole vectors, which correspond to the 1s-π∗ and 1s-σ∗ transitions, respectively, are responsible for the polarization dependence of the x-ray absorption intensity in graphene. Using the atomic
matrix elements, the low-energy XAS peaks can be assigned.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevB.85.115410
