Interplanar stiffness in defect-free monocrystalline graphite

Kusakabe, Koichi; Wake, Atsuki; Nagakubo, Akira et al.

Physical Review Materials, 2020, 4(4), 043603-1-043603-5

Number of Access:629（2025-08-01 03:04 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84184

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Title
Interplanar stiffness in defect-free monocrystalline graphite
Creator
NRID
1000010262164 1000010262164
CreatorName
Kusakabe, Koichi
CreatorName
Wake, Atsuki
NRID
1000070751113 1000070751113
ORCID
0000-0001-7494-5099 0000-0001-7494-5099
researchmap permalink
nagakubo nagakubo
Scopus Author ID
55329400300 55329400300
CreatorName
Nagakubo, Akira
CreatorName
Murashima, Kensuke
CreatorName
Murakami, Mutsuaki
NRID
1000050823879 1000050823879
ORCID
0000-0002-5321-3777 0000-0002-5321-3777
researchmap permalink
kantaadachi kantaadachi
Scopus Author ID
57146267500 57146267500
CreatorName
Adachi, Kanta
NRID
1000090252626 1000090252626
researchmap permalink
read0042771 read0042771
Scopus Author ID
35563683500 35563683500
CreatorName
Ogi, Hirotsugu
Description
Kusakabe K., Wake A., Nagakubo A., et al. "Interplanar stiffness in defect-free monocrystalline graphite", Physical Review Materials, 4(4), 043603. https://doi.org/10.1103/PhysRevMaterials.4.043603.
Abstract
The interplanar bond strength in graphite has been identified to be very low, owing to the contribution of the van der Waals interaction. However, in this study, we use microscopic picosecond ultrasound to demonstrate that the elastic constant, C33, along the c axis of defect-free monocrystalline graphite exceeds 45 GPa, which is higher than reported values by 20%. Based on the experimental finding, we find that the LDA+U+RPA method, including both random phase approximation correlation and short-range correlation in 2p Wannier orbitals, can be a promising solution. The agreement of thus calculated stiffness with the observation indicates non-negligible electron correlation effects with respect to both the short-range and long-range interactions.
Publisher
American Physical Society
Source Title
Physical Review Materials
Volume (Issue)
4(4)
Page
043603-1-043603-5
Date of Issued
2020-04-20
Language
English
Handle URL
https://hdl.handle.net/11094/84184
eISSN
24759953
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1103/PhysRevMaterials.4.043603
Access Rights
open access
CopyRight
Copyright 2020 by the American Physical Society
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article