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Phonon Anharmonicities in Graphite and Graphene

Open access
Bonini, Nicola, Lazzeri, Michele, Marzari, Nicola, Mauri, Francesco·2007·Physical Review Letters

Abstract

We determine from first principles the finite-temperature properties-linewidths, line shifts, and lifetimes-of the key vibrational modes that dominate inelastic losses in graphitic materials. In graphite, the phonon linewidth of the Raman-active E(2g) mode is found to decrease with temperature; such anomalous behavior is driven entirely by electron-phonon interactions, and does not appear in the nearly degenerate infrared-active E(1u) mode. In graphene, the phonon anharmonic lifetimes and decay channels of the A(1)' mode at K dominate over E(2g) at Gamma and couple strongly with acoustic phonons, highlighting how ballistic transport in carbon-based interconnects requires careful engineering of phonon decays and thermalization.

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Metadata

Authors
Bonini, N., Lazzeri, M., Marzari, N., & Mauri, F.
Venue
Physical Review Letters
Published
2007-10-24
Volume
99
Issue
17
Pages
176802-176802
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2003365324
Cited by
480
References
1
FWCI
9.14
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Phonon Anharmonicities in Graphite and Graphene. https://app.cochat.ai/papers/10.1103/physrevlett.99.176802
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Bonini, N., Lazzeri, M., Marzari, N., & Mauri, F. (2007). Phonon Anharmonicities in Graphite and Graphene. Physical Review Letters. https://doi.org/10.1103/physrevlett.99.176802

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