Triple Point Topological Metals
Open accessAbstract
Topologically protected fermionic quasiparticles appear in metals, where band degeneracies occur at the Fermi level, dictated by the band structure topology. While in some metals these quasiparticles are direct analogues of elementary fermionic particles of the relativistic quantum field theory, other metals can have symmetries that give rise to quasiparticles, fundamentally different from those known in high-energy physics. Here, we report on a new type of topological quasiparticles—triple point fermions—realized in metals with symmorphic crystal structure, which host crossings of three bands in the vicinity of the Fermi level protected by point group symmetries. We find two topologically different types of triple point fermions, both distinct from any other topological quasiparticles reported to date. We provide examples of existing materials that host triple point fermions of both types and discuss a variety of physical phenomena associated with these quasiparticles, such as the occurrence of topological surface Fermi arcs, transport anomalies, and topological Lifshitz transitions.
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- Authors
- Zhu, Z., Winkler, G. W., Wu, Q., Li, J., & Soluyanov, A. A.
- Affiliations
- Massachusetts Institute of Technology (US)
- ETH Zurich (CH)
- St Petersburg University (RU)
- Venue
- ETH Zurich
- Publisher
- ETH Zurich
- Published
- 2016
- OpenAlex
- W3124656682
- Cited by
- 333
- References
- 9
- Citations by year
- 2025: 12 · 2024: 22 · 2023: 36 · 2022: 37 · 2021: 50 · 2020: 48 · 2019: 43 · 2018: 49 · 2017: 31 · 2016: 5
- FWCI
- 20.16
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Licence
- Locations
- DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
- Repository for Publications and Research Data (ETH Zurich) (submittedVersion, cc-by)
- ETH Zürich Research Collection (cc-by)
- Funders
- National Science Foundation (DMR-11-20 901, 1410636)
- Microsoft Research
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Xi’an Jiaotong University
- National Key Research and Development Program of China (2012CB619402)
- Division of Materials Research (DMR‐1120901, 11-20901, DMR-1410636)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Rare-earth and actinide compounds
- Keywords
- topological metals, topological quasiparticles, point group symmetry, anomalous transport, band topology
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