journal article·2019-10-01Open access

Evolution of the charge carrier plasmon in the one-dimensional metal TTF-TCNQ as a function of temperature and momentum

Nikolay Kovbasa, Lukas Graf, Martin Knupfer

Materials Research Express· Volume 6· Issue 10

Abstract

Abstract We have investigated the charge carrier plasmon in the quasi one-dimensional metal TTF-TCNQ using electron energy-loss spectroscopy. Our data reveal a negative plasmon dispersion with a slope that is independent of temperature, which is in agreement to predictions from model calculations and previous room temperature data. A plasmon energy shift upon temperature is observed, and we discuss possible contributions to this shift. The spectral width of the plasmon is rather temperature independent, but increases clearly above a momentum value of about 0.3 Å−1.
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Research context

OpenAlex topics: Organic and Molecular Conductors Research · Quantum and electron transport phenomena · Electronic and Structural Properties of Oxides

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