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Kohn anomalies and electron-phonon interactions in graphite.

Physical review letters, no. 18 (2004): 185503-185503

Cited by: 978|Views6
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Abstract

We demonstrate that graphite phonon dispersions have two Kohn anomalies at the Gamma-E(2g) and K-A'1 modes. The anomalies are revealed by two sharp kinks. By an exact analytic derivation, we show that the slope of these kinks is proportional to the square of the electron-phonon coupling (EPC). Thus, we can directly measure the EPC from th...More

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