Detection of interlayer interaction in few-layer graphene

Zefei Wu; Yu Han; Jiangxiazi Lin; Wei Zhu; Mingquan He; Shuigang Xu; Xiaolong Chen; Huanhuan Lu; Weiguang Ye; Tianyi Han; Yingying Wu; Gen Long; Junying Shen; Rui Huang; Lin Wang; Yuheng He; Yuan Cai; Rolf Lortz; Dangsheng Su; Ning Wang

doi:10.1103/PhysRevB.92.075408

Detection of interlayer interaction in few-layer graphene

Zefei Wu, Yu Han, Jiangxiazi Lin, Wei Zhu, Mingquan He, Shuigang Xu, Xiaolong Chen, Huanhuan Lu, Weiguang Ye, Tianyi Han, Yingying Wu, Gen Long, Junying Shen, Rui Huang, Lin Wang, Yuheng He, Yuan Cai, Rolf Lortz, Dangsheng Su, Ning Wang

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

26 Scopus citations

Abstract

Bernal-stacked few-layer graphene has been investigated by analyzing its Landau-level spectra through quantum capacitance measurements. We find that surface relaxation, which is insignificant in trilayer graphene, starts to manifest in Bernal-stacked tetralayer graphene. In trilayer graphene, the interlayer interaction parameters are generally similar to those of graphite. However, in tetralayer graphene, the hopping parameters of the two bulk layers are quite different from those of the two outer layers. This represents direct evidence of the surface relaxation phenomenon. Traditionally, the van der Waals interaction between the carbon layers is thought to be insignificant. However, we suggest that the interlayer interaction is an important factor in explaining the observed results, and the symmetry-breaking effects in graphene sublattice are not negligible.

Original language	English
Article number	075408
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.92.075408
State	Published - 6 Aug 2015
Externally published	Yes

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Wu, Z., Han, Y., Lin, J., Zhu, W., He, M., Xu, S., Chen, X., Lu, H., Ye, W., Han, T., Wu, Y., Long, G., Shen, J., Huang, R., Wang, L., He, Y., Cai, Y., Lortz, R., Su, D., & Wang, N. (2015). Detection of interlayer interaction in few-layer graphene. Physical Review B - Condensed Matter and Materials Physics, 92(7), Article 075408. https://doi.org/10.1103/PhysRevB.92.075408

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title = "Detection of interlayer interaction in few-layer graphene",

abstract = "Bernal-stacked few-layer graphene has been investigated by analyzing its Landau-level spectra through quantum capacitance measurements. We find that surface relaxation, which is insignificant in trilayer graphene, starts to manifest in Bernal-stacked tetralayer graphene. In trilayer graphene, the interlayer interaction parameters are generally similar to those of graphite. However, in tetralayer graphene, the hopping parameters of the two bulk layers are quite different from those of the two outer layers. This represents direct evidence of the surface relaxation phenomenon. Traditionally, the van der Waals interaction between the carbon layers is thought to be insignificant. However, we suggest that the interlayer interaction is an important factor in explaining the observed results, and the symmetry-breaking effects in graphene sublattice are not negligible.",

author = "Zefei Wu and Yu Han and Jiangxiazi Lin and Wei Zhu and Mingquan He and Shuigang Xu and Xiaolong Chen and Huanhuan Lu and Weiguang Ye and Tianyi Han and Yingying Wu and Gen Long and Junying Shen and Rui Huang and Lin Wang and Yuheng He and Yuan Cai and Rolf Lortz and Dangsheng Su and Ning Wang",

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doi = "10.1103/PhysRevB.92.075408",

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T1 - Detection of interlayer interaction in few-layer graphene

AU - Wu, Zefei

AU - Han, Yu

AU - Lin, Jiangxiazi

AU - Zhu, Wei

AU - He, Mingquan

AU - Xu, Shuigang

AU - Chen, Xiaolong

AU - Lu, Huanhuan

AU - Ye, Weiguang

AU - Han, Tianyi

AU - Wu, Yingying

AU - Long, Gen

AU - Shen, Junying

AU - Huang, Rui

AU - Wang, Lin

AU - He, Yuheng

AU - Cai, Yuan

AU - Lortz, Rolf

AU - Su, Dangsheng

AU - Wang, Ning

PY - 2015/8/6

Y1 - 2015/8/6

N2 - Bernal-stacked few-layer graphene has been investigated by analyzing its Landau-level spectra through quantum capacitance measurements. We find that surface relaxation, which is insignificant in trilayer graphene, starts to manifest in Bernal-stacked tetralayer graphene. In trilayer graphene, the interlayer interaction parameters are generally similar to those of graphite. However, in tetralayer graphene, the hopping parameters of the two bulk layers are quite different from those of the two outer layers. This represents direct evidence of the surface relaxation phenomenon. Traditionally, the van der Waals interaction between the carbon layers is thought to be insignificant. However, we suggest that the interlayer interaction is an important factor in explaining the observed results, and the symmetry-breaking effects in graphene sublattice are not negligible.

AB - Bernal-stacked few-layer graphene has been investigated by analyzing its Landau-level spectra through quantum capacitance measurements. We find that surface relaxation, which is insignificant in trilayer graphene, starts to manifest in Bernal-stacked tetralayer graphene. In trilayer graphene, the interlayer interaction parameters are generally similar to those of graphite. However, in tetralayer graphene, the hopping parameters of the two bulk layers are quite different from those of the two outer layers. This represents direct evidence of the surface relaxation phenomenon. Traditionally, the van der Waals interaction between the carbon layers is thought to be insignificant. However, we suggest that the interlayer interaction is an important factor in explaining the observed results, and the symmetry-breaking effects in graphene sublattice are not negligible.

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DO - 10.1103/PhysRevB.92.075408

M3 - 文章

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SN - 1098-0121

VL - 92

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 7

M1 - 075408

ER -

Detection of interlayer interaction in few-layer graphene

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