Volume 19, Issue 48 2303295
Research Article

Extremely Large Response of Phonon Coherence in Twisted Penta-NiN2 Bilayer

Chenxin Zhang

Chenxin Zhang

School of Materials Science and Engineering, CAPT, BKL-MEMD, Peking University, Beijing, 100871 China

Search for more papers by this author
Jie Sun

Jie Sun

Institute of Engineering Innovation, School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0032 Japan

Search for more papers by this author
Yiheng Shen

Yiheng Shen

School of Materials Science and Engineering, CAPT, BKL-MEMD, Peking University, Beijing, 100871 China

Search for more papers by this author
Cunzhi Zhang

Cunzhi Zhang

Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60 637 USA

Search for more papers by this author
Qian Wang

Corresponding Author

Qian Wang

School of Materials Science and Engineering, CAPT, BKL-MEMD, Peking University, Beijing, 100871 China

E-mail: [email protected]

Search for more papers by this author
Akira Yoshikawa

Akira Yoshikawa

Institute for Materials Research, Tohoku University, Sendai, 980–8577 Japan

Search for more papers by this author
Yoshiyuki Kawazoe

Yoshiyuki Kawazoe

New Industry Creation Hatchery Center, Tohoku University, Sendai, 980–8577 Japan

Department of Physics, Suranaree University of Technology, Nakhon Ratchasima, 30000 Thailand

Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203 India

Search for more papers by this author
Puru Jena

Puru Jena

Department of Physics, Virginia Commonwealth University, Richmond, VA, 23284 USA

Search for more papers by this author
First published: 31 July 2023
Citations: 2

Abstract

Twisting has recently been demonstrated as an effective strategy for tuning the interactions between particles or quasi-particles in layered materials. Motivated by the recent experimental synthesis of pentagonal NiN2 sheet [ACS Nano 2021, 15, 13539], for the first time, the response of phonon coherence to twisting in bilayer penta-NiN2, going beyond the particle-like phonon transport is studied. By using the unified theory of phonon transport and high order lattice anharmonicity, together with the self-consistent phonon theory, it is found that the lattice thermal conductivity is reduced by 80.6% from 33.35 to 6.47 W m−1 K−1 at 300 K when the layers are twisted. In particular, the contribution of phonon coherence is increased sharply by an order of magnitude, from 0.21 to 2.40 W m−1 K−1 , due to the reduced differences between the phonon frequencies and enhanced anharmonicity after the introduction of twist. The work provides a fundamental understanding of the phonon interaction in twisted pentagonal sheets.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.