TY - JOUR
T1 - Polarization dependence of x-ray absorption spectra in graphene
AU - Chowdhury, M. T.
AU - Saito, R.
AU - Dresselhaus, M. S.
PY - 2012/3/9
Y1 - 2012/3/9
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.85.115410
DO - 10.1103/PhysRevB.85.115410
M3 - Article
AN - SCOPUS:84858022570
SN - 0163-1829
VL - 85
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 11
M1 - 115410
ER -