The shear mode of multilayer graphene

P.H. Tan; W.P. Han; W.J. Zhao; Z.H. Wu; K. Chang; Y.F. Wang; Nicola Bonini; Nicola Marzari; G. Savini; A. Lombardo; A. C. Ferrari

doi:10.1038/nmat3245

The shear mode of multilayer graphene

P.H. Tan, W.P. Han, W.J. Zhao, Z.H. Wu, K. Chang, Y.F. Wang, Nicola Bonini, Nicola Marzari, G. Savini, A. Lombardo, A. C. Ferrari

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

591 Citations (Scopus)

Abstract

The quest for materials capable of realizing the next generation of electronic and photonic devices continues to fuel research on the electronic, optical and vibrational properties of graphene. Few-layer graphene (FLG) flakes with less than ten layers each show a distinctive band structure. Thus, there is an increasing interest in the physics and applications of FLGs. Raman spectroscopy is one of the most useful and versatile tools to probe graphene samples. Here, we uncover the interlayer shear mode of FLGs, ranging from bilayer graphene (BLG) to bulk graphite, and suggest that the corresponding Raman peak measures the interlayer coupling. This peak scales from ~43 cm−1 in bulk graphite to ~31 cm−1 in BLG. Its low energy makes it sensitive to near-Dirac point quasiparticles. Similar shear modes are expected in all layered materials, providing a direct probe of interlayer interactions.

Original language	English
Pages (from-to)	294-300
Number of pages	7
Journal	NATURE MATERIALS
Volume	11
Early online date	5 Feb 2012
DOIs	https://doi.org/10.1038/nmat3245
Publication status	Published - Apr 2012

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title = "The shear mode of multilayer graphene",

abstract = "The quest for materials capable of realizing the next generation of electronic and photonic devices continues to fuel research on the electronic, optical and vibrational properties of graphene. Few-layer graphene (FLG) flakes with less than ten layers each show a distinctive band structure. Thus, there is an increasing interest in the physics and applications of FLGs. Raman spectroscopy is one of the most useful and versatile tools to probe graphene samples. Here, we uncover the interlayer shear mode of FLGs, ranging from bilayer graphene (BLG) to bulk graphite, and suggest that the corresponding Raman peak measures the interlayer coupling. This peak scales from ~43 cm−1 in bulk graphite to ~31 cm−1 in BLG. Its low energy makes it sensitive to near-Dirac point quasiparticles. Similar shear modes are expected in all layered materials, providing a direct probe of interlayer interactions.",

author = "P.H. Tan and W.P. Han and W.J. Zhao and Z.H. Wu and K. Chang and Y.F. Wang and Nicola Bonini and Nicola Marzari and G. Savini and A. Lombardo and Ferrari, {A. C.}",

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doi = "10.1038/nmat3245",

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T1 - The shear mode of multilayer graphene

AU - Tan, P.H.

AU - Han, W.P.

AU - Zhao, W.J.

AU - Wu, Z.H.

AU - Chang, K.

AU - Wang, Y.F.

AU - Bonini, Nicola

AU - Marzari, Nicola

AU - Savini, G.

AU - Lombardo, A.

AU - Ferrari, A. C.

PY - 2012/4

Y1 - 2012/4

N2 - The quest for materials capable of realizing the next generation of electronic and photonic devices continues to fuel research on the electronic, optical and vibrational properties of graphene. Few-layer graphene (FLG) flakes with less than ten layers each show a distinctive band structure. Thus, there is an increasing interest in the physics and applications of FLGs. Raman spectroscopy is one of the most useful and versatile tools to probe graphene samples. Here, we uncover the interlayer shear mode of FLGs, ranging from bilayer graphene (BLG) to bulk graphite, and suggest that the corresponding Raman peak measures the interlayer coupling. This peak scales from ~43 cm−1 in bulk graphite to ~31 cm−1 in BLG. Its low energy makes it sensitive to near-Dirac point quasiparticles. Similar shear modes are expected in all layered materials, providing a direct probe of interlayer interactions.

AB - The quest for materials capable of realizing the next generation of electronic and photonic devices continues to fuel research on the electronic, optical and vibrational properties of graphene. Few-layer graphene (FLG) flakes with less than ten layers each show a distinctive band structure. Thus, there is an increasing interest in the physics and applications of FLGs. Raman spectroscopy is one of the most useful and versatile tools to probe graphene samples. Here, we uncover the interlayer shear mode of FLGs, ranging from bilayer graphene (BLG) to bulk graphite, and suggest that the corresponding Raman peak measures the interlayer coupling. This peak scales from ~43 cm−1 in bulk graphite to ~31 cm−1 in BLG. Its low energy makes it sensitive to near-Dirac point quasiparticles. Similar shear modes are expected in all layered materials, providing a direct probe of interlayer interactions.

U2 - 10.1038/nmat3245

DO - 10.1038/nmat3245

M3 - Letter

SN - 1476-1122

VL - 11

SP - 294

EP - 300

JO - NATURE MATERIALS

JF - NATURE MATERIALS

ER -

The shear mode of multilayer graphene

Abstract

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