Global k -space analysis of electron-phonon interaction in graphene and application to M -point spectroscopy

Rudolf Binder, Adam T. Roberts, Nai-Hang Kwong, Arvinder Singh Sandhu, Henry O. Everitt

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Recently, optical probes have become available that can access and observe energy renormalization due to electron-phonon interaction in graphene away from the well-studied Dirac K point. Using an expanded deformation potential approach, we present a theoretical study of the electron-phonon self-energy and scattering matrix elements across the entire Brillouin zone. We elucidate the roles of modulated hopping and conventional deformation potential coupling, parameterized via standard deformation potentials, the in-plane phonon modes, intra- and interband contributions, and umklapp processes. Applying the theory to nonlinear optical transmission spectroscopy in the vicinity of the M point, we find very good agreement with recently published experimental data.

Original languageEnglish (US)
Article number085414
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume93
Issue number8
DOIs
StatePublished - Feb 8 2016

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Electron-phonon interactions
Graphite
electron phonon interactions
Graphene
graphene
Spectroscopy
Umklapp process
spectroscopy
S matrix theory
Light transmission
Brillouin zones
Scattering
energy
Electrons
probes
matrices
electrons

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

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abstract = "Recently, optical probes have become available that can access and observe energy renormalization due to electron-phonon interaction in graphene away from the well-studied Dirac K point. Using an expanded deformation potential approach, we present a theoretical study of the electron-phonon self-energy and scattering matrix elements across the entire Brillouin zone. We elucidate the roles of modulated hopping and conventional deformation potential coupling, parameterized via standard deformation potentials, the in-plane phonon modes, intra- and interband contributions, and umklapp processes. Applying the theory to nonlinear optical transmission spectroscopy in the vicinity of the M point, we find very good agreement with recently published experimental data.",
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T1 - Global k -space analysis of electron-phonon interaction in graphene and application to M -point spectroscopy

AU - Binder, Rudolf

AU - Roberts, Adam T.

AU - Kwong, Nai-Hang

AU - Sandhu, Arvinder Singh

AU - Everitt, Henry O.

PY - 2016/2/8

Y1 - 2016/2/8

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AB - Recently, optical probes have become available that can access and observe energy renormalization due to electron-phonon interaction in graphene away from the well-studied Dirac K point. Using an expanded deformation potential approach, we present a theoretical study of the electron-phonon self-energy and scattering matrix elements across the entire Brillouin zone. We elucidate the roles of modulated hopping and conventional deformation potential coupling, parameterized via standard deformation potentials, the in-plane phonon modes, intra- and interband contributions, and umklapp processes. Applying the theory to nonlinear optical transmission spectroscopy in the vicinity of the M point, we find very good agreement with recently published experimental data.

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