Single Crystal Growth and Magnetoresistivity of Topological Semimetal CoSi

作者：Dingsong Wu, Z. Mi, Youcai Li, W. Wu, Peiling Li, Y. T. Song, Guoguo Liu, Gang Li, Jian-lin Luo · 发表于：Chinese Physics Letters · 年份：2019 · DOI：10.1088/0256-307X/36/7/077102 · 被引用次数：17 · 研究领域：Physics、Materials Science

We report single crystal growth of CoSi, which has recently been recognized as a new type of topological semimetal hosting fourfold and sixfold degenerate nodes. The Shubnikov-de Haas quantum oscillation (QO) is observed on our crystals. There are two frequencies originating from almost isotropic bulk electron Fermi surfaces, in accordance with band structure calculations. The effective mass, scattering rate, and QO phase difference of the two frequencies are extracted and discussed.