Anharmonicity and Universal Response of Linear Carbon Chain Mechanical Properties under Hydrostatic Pressure
Name
PhysRevLett.125.105501.pdf
Description
Published version
Size
627.02 KB
Format
Unknown
Checksum (MD5)
ff2416b07e840f42cc26ff2beea99daf
Author(s)
Sharma, Keshav
Costa, Nathalia L.
Kim, Yoong Ahm
Muramatsu, Hiroyuki
Barbosa Neto, Newton M.
Martins, Luiz G. P.
Kong, Jing
Paschoal, Alexandre Rocha
Araujo, Paulo T.
Date Issued
2020
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Version
Final published version
Abstract
© 2020 American Physical Society. Isolated linear carbon chains (LCCs) encapsulated by multiwalled carbon nanotubes are studied under hydrostatic pressure (P) via resonance Raman scattering. The LCCs' spectroscopic signature C band around 1850 cm-1 softens linearly with increasing P. A simple anharmonic force-constant model not only describes such softening but also shows that the LCCs' Young's modulus (E), Grüneisen parameter (γ), and strain ( µ) follow universal P-1 and P2 laws, respectively. In particular, γ also presents a unified behavior for all LCCs. To the best of our knowledge, these are the first results reported on such isolated systems and the first work to explore universal P-dependent responses for LCCs' E, µ, and γ.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.125.105501
