| 书目名称 | Linear and Nonlinear Optical Responses of Chiral Multifold Semimetals |
| 编辑 | Miguel Ángel Sánchez Martínez |
| 视频video | |
| 概述 | Exploits optical responses as experimental probes of topological phases.Identifies fingerprints of each type of multifold fermion in the optical conductivity.Computes and discusses second-harmonic gen |
| 丛书名称 | Springer Theses |
| 图书封面 |  |
| 描述 | .Since the initial predictions for the existence of Weyl fermions in condensed matter, many different experimental techniques have confirmed the existence of Weyl semimetals. Among these techniques, optical responses have shown a variety of effects associated with the existence of Weyl fermions. In chiral crystals, we find a new type of fermions protected by crystal symmetries — the chiral multifold fermions — that can be understood as a higher-spin generalization of Weyl fermions..This work provides a complete description of all chiral multifold fermions, studying their topological properties and the k·p models describing them. We compute the optical conductivity of all chiral multifold fermions and establish their optical selection rules. We find that the activation frequencies are different for each type of multifold fermion, thus constituting an experimental fingerprint for each type of multifold fermion..Building on the theoretical results obtained in the first partof our analysis, we study two chiral multifold semimetals: RhSi and CoSi. We analyze the experimental results with k·p and tight-binding models based on the crystal symmetries of the material. We trace back the feat |
| 出版日期 | Book 2023 |
| 关键词 | Topological Semimetals; Multifold Fermions; Second-harmonic Generation; Optical Conductivity; CoSi; Optic |
| 版次 | 1 |
| doi | https://doi.org/10.1007/978-3-031-25771-1 |
| isbn_softcover | 978-3-031-25773-5 |
| isbn_ebook | 978-3-031-25771-1Series ISSN 2190-5053 Series E-ISSN 2190-5061 |
| issn_series | 2190-5053 |
| copyright | The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerl |
发表于 2025-3-21 18:00:57
