Anisotropic Tunability of Vibrational Modes in Black Phosphorus Under Uniaxial Compressive/Tensile Strain

Author:

Li Hao1ORCID,Kutlu Tayfun2,Carrascoso Félix1,Sahin Hasan3,Munuera Carmen1,Castellanos Gómez Andrés1ORCID

Affiliation:

1. Materials Science Factory Instituto de Ciencia de Materiales de Madrid (ICMM‐CSIC) Madrid 28049 Spain

2. Department of Physics Izmir Institute of Technology Izmir 35430 Turkey

3. Department of Photonics Izmir Institute of Technology Izmir 35430 Turkey

Abstract

AbstractStrain engineering is a powerful strategy for tuning the optical, electrical, vibrational properties of 2D nanomaterials. In this work, a four‐point bending apparatus is constructed to apply both compressive and tensile strain on 2D anisotropic black phosphorus flake. Further polarized Raman spectroscopy is used to study the vibrational modes of black phosphorus flakes under uniaxial strain applied along various crystalline orientations. Here, a strong anisotropic blue/redshift of A1g, B2g, and A2g modes is found under compressive/tensile strain, respectively. Interestingly, mode A1g exhibits the maximum/minimum shift while mode B2g and mode A2g present the minimum/maximum shift when the strain is applied along armchair/zigzag direction. Density functional theory calculations are carried out to investigate the anisotropic strain response mechanism, finding that the strain‐induced regulation of the P─P bond angle, bond length, and especially interlayer interaction has a giant influence on the Raman shift.

Funder

European Research Council

Ministerio de Ciencia e Innovación

HORIZON EUROPE European Research Council

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3