Semi-Dirac fermion
Semi-Dirac fermions are a class of quasiparticles that are fermions with the unusual property that their mass changes dependent on their direction of motion.[1] Their theoretical properties have been studied for some time.[2][3]
Their first observation in a solid was in ZrSiS, a topological semi-metal, and was published in 2024.[4]
See also
[edit]References
[edit]- ^ "Particle that only has mass when moving in one direction observed for first time | Penn State University". www.psu.edu. Retrieved 2024-12-12.
- ^ Uryszek, Mikolaj D.; Christou, Elliot; Jaefari, Akbar; Krüger, Frank; Uchoa, Bruno (2019-10-01). "Quantum criticality of semi-Dirac fermions in 2 + 1 dimensions". Physical Review B. 100 (15). doi:10.1103/PhysRevB.100.155101. ISSN 2469-9950.
- ^ Mohanta, Narayan; Ok, Jong Mok; Zhang, Jie; Miao, Hu; Dagotto, Elbio; Lee, Ho Nyung; Okamoto, Satoshi (2021-12-10). "Semi-Dirac and Weyl fermions in transition metal oxides". Physical Review B. 104 (23). doi:10.1103/PhysRevB.104.235121. ISSN 2469-9950.
- ^ Shao, Yinming (2024). "Semi-Dirac Fermions in a Topological Metal". Physical Review X. 14 (4). doi:10.1103/PhysRevX.14.041057.
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