Reflectivity of a one-dimensional electron-phonon system

H. Gutfreund; B. Horovitz; M. Weger

doi:10.1016/0038-1098(74)90678-4

Reflectivity of a one-dimensional electron-phonon system

H. Gutfreund, B. Horovitz, M. Weger

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

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 2k_F affect the reflectivity of photons with q ≈ 0.

Original language	English
Pages (from-to)	849-853
Number of pages	5
Journal	Solid State Communications
Volume	15
Issue number	5
DOIs	https://doi.org/10.1016/0038-1098(74)90678-4
State	Published - 1 Sep 1974
Externally published	Yes

ASJC Scopus subject areas

Chemistry (all)
Condensed Matter Physics
Materials Chemistry

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title = "Reflectivity of a one-dimensional electron-phonon system",

abstract = "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.",

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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.

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U2 - 10.1016/0038-1098(74)90678-4

DO - 10.1016/0038-1098(74)90678-4

M3 - Article

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JO - Solid State Communications

JF - Solid State Communications

IS - 5

ER -

Reflectivity of a one-dimensional electron-phonon system

Abstract

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