TY - JOUR
T1 - Reflectivity of a one-dimensional electron-phonon system
AU - Gutfreund, H.
AU - Horovitz, B.
AU - Weger, M.
PY - 1974/9/1
Y1 - 1974/9/1
N2 - The effect of the giant Kohn anomaly in a one dimensional system on the optical reflectivity is calculated, for parameters believed to be characteristic for TTFTCNQ. It is found that the Kohn anomaly in the optical phonon branch due to stretching vibrations of the CN groups, whose unperturbed frequency is 2100-2200 cm-1, produces a minimum in the reflectivity at 1600 cm-, approximately. This minimum coincides with the minimum w found experimentally by Bright, Garito and Heeger. By this mechanism, phonons with a wavevector of order 2kF affect the reflectivity of photons with q ≈ 0.
AB - The effect of the giant Kohn anomaly in a one dimensional system on the optical reflectivity is calculated, for parameters believed to be characteristic for TTFTCNQ. It is found that the Kohn anomaly in the optical phonon branch due to stretching vibrations of the CN groups, whose unperturbed frequency is 2100-2200 cm-1, produces a minimum in the reflectivity at 1600 cm-, approximately. This minimum coincides with the minimum w found experimentally by Bright, Garito and Heeger. By this mechanism, phonons with a wavevector of order 2kF affect the reflectivity of photons with q ≈ 0.
UR - http://www.scopus.com/inward/record.url?scp=49549150714&partnerID=8YFLogxK
U2 - 10.1016/0038-1098(74)90678-4
DO - 10.1016/0038-1098(74)90678-4
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AN - SCOPUS:49549150714
SN - 0038-1098
VL - 15
SP - 849
EP - 853
JO - Solid State Communications
JF - Solid State Communications
IS - 5
ER -