Physically founded phonon dispersions of few-layer materials and the case of borophene

Jesús Carrete; Wu Li; Lucas Lindsay; David A. Broido; Luis J. Gallego; Natalio Mingo

doi:10.1080/21663831.2016.1174163

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Physically founded phonon dispersions of few-layer materials and the case of borophene

Original Report | 更新时间：2026-08-19

- Physically founded phonon dispersions of few-layer materials and the case of borophene
- Physically founded phonon dispersions of few-layer materials and the case of borophene
- 材料研究快报（英文） 2016年4卷第4期页码：204-211
- 作者机构：
  
  1. CEA LITEN 17 Rue des Martyrs
  2. Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge
  3. Department of Physics Boston College Chestnut Hill
  4. Departamento de Física de la Materia Condensada Facultad de Física Universidad de Santiago de Compostela
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2016.1174163
  中图分类号：
- 网络首发：2016-04-21，
  
  纸质出版：2016
- 稿件说明：
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Jesús Carrete, Wu Li, Lucas Lindsay, 等. Physically founded phonon dispersions of few-layer materials and the case of borophene[J]. 材料研究快报（英文）, 2016,4(4):204-211.

Jesús Carrete, Wu Li, Lucas Lindsay, et al. Physically founded phonon dispersions of few-layer materials and the case of borophene[J]. Materials Research Letters, 2016, 4(4): 204-211.
Jesús Carrete, Wu Li, Lucas Lindsay, 等. Physically founded phonon dispersions of few-layer materials and the case of borophene[J]. 材料研究快报（英文）, 2016,4(4):204-211. DOI： 10.1080/21663831.2016.1174163.

Jesús Carrete, Wu Li, Lucas Lindsay, et al. Physically founded phonon dispersions of few-layer materials and the case of borophene[J]. Materials Research Letters, 2016, 4(4): 204-211. DOI： 10.1080/21663831.2016.1174163.

摘要

Abstract

BSTRACTBy building physically sound interatomic force constants

we offer evidence of the universal presence of a quadratic phonon branch in all unstrained 2D materials

thus contradicting much of the existing literature. Through a reformulation of the interatomic force constants (IFCs) in terms of internal coordinates

we find that a delicate balance between the IFCs is responsible for this quadraticity. We use this approach to predict the thermal conductivity of Pmmn borophene

which is comparable to that of

and displays a remarkable in-plane anisotropy. These qualities may enable the efficient heat management of borophene devices in potential nanoelectronic applications.

IMPACT STATEMENT

The newly found universality of quadratic dispersion will change the way 2D-material phonons are calculated. Predicted results for borophene shall become a fundamental reference for future research on this material.

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相关机构

e Nebraska Center for Materials and Nanoscience University of Nebraska-Lincoln

d Department of Mechanical and Materials Engineering University of Nebraska-Lincoln Lincoln NE USA

d Department of Mechanical and Materials Engineering University of Nebraska-Lincoln

c Center for Integrated Nanotechnologies Sandia National Laboratories Albuquerque

a Materials Science and Engineering Department Idaho National Laboratory Idaho Falls

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