J. Mater. Sci. Technol. ›› 2026, Vol. 262: 244-251.DOI: 10.1016/j.jmst.2025.09.079

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Polarized double-resonance Raman spectra of black phosphorus

Ye Zhanga,b, Renhui Liua,b, Jianqi Huangc,*, Xingzhi Wangd, Wenlai Mua,b, Nguyen Tuan Hunge, Riichiro Saitof, Huaihong Guog,*, Teng Yanga,b,*, Zhidong Zhanga,b   

  1. aShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
    bSchool of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;
    cLiaoning Academy of Materials, Shenyang 110167, China;
    dDepartment of Physics, Xiamen University, Xiamen 361005, China;
    eFrontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan;
    fDepartment of Physics, Tohoku University, Sendai 980-8578, Japan;
    gCollege of Sciences, Liaoning Petrochemical University, Fushun 113001, China
  • Received:2025-05-30 Revised:2025-09-15 Accepted:2025-09-19 Published:2026-08-10 Online:2025-11-05
  • Contact: *E-mail addresses: jqhuang@lam.ln.cn (J. Huang), hhguo@alum.imr.ac.cn (H. Guo), yanghaiteng@msn.com (T. Yang).

Abstract: Black phosphorus (BP) exhibits a broad spectrum of double-resonance Raman (DRR) peaks from 500 to 1000 cm-1, which provide valuable information on symmetry and phonon. However, previous assignments of phonons associated with the DRR peaks have not yielded consistent results because most optical phonon branches are densely located in the small frequency region of 350-500 cm-1. In this study, we calculate the DRR spectra using a first-principles approach that accounts for both the electron-photon and electron-phonon matrix elements. Based on the calculated Raman tensor, we present polarized Raman spectra of each DRR peak, which reproduce the experimental polarized Raman spectra. We find that most of the DRR peaks originate from a specific phonon wavevector in the Brillouin zone. Ag-like linearly and circularly polarized DRR spectra are observed and calculated, which can be ascribed to the phase difference between diagonal elements of the Raman tensor. Our assignments, combined with group-theory analysis, have provided a grounded origin of the DRR peaks of BP.

Key words: Polarized Raman spectra, Double-resonance Raman modes, Black phosphorus, First-principles calculation