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| {{Short description|Class of fermionic quasiparticles}} | {{Short description|Class of fermionic quasiparticles}} | ||
| In ], '''semi-Dirac fermions''' are a class of ]s that are ] with the unusual property that their energy ] changes from quadratic to linear dependent on their direction of motion.<ref>{{Cite web |title=Particle that only has mass when moving in one direction observed for first time {{!}} Penn State University |url=https://www.psu.edu/news/research/story/particle-only-has-mass-when-moving-one-direction-observed-first-time |access-date=2024-12-12 |website=www.psu.edu}}</ref> Their theoretical properties have been studied for some time.<ref>{{Cite journal | |
In ], '''semi-Dirac fermions''' are a class of ]s that are ] with the unusual property that their energy ] changes from quadratic to linear dependent on their direction of motion.<ref>{{Cite web |title=Particle that only has mass when moving in one direction observed for first time {{!}} Penn State University |url=https://www.psu.edu/news/research/story/particle-only-has-mass-when-moving-one-direction-observed-first-time |access-date=2024-12-12 |website=www.psu.edu}}</ref> Their theoretical properties have been studied for some time.<ref>{{Cite journal |last1=Uryszek |first1=Mikolaj D. |last2=Christou |first2=Elliot |last3=Jaefari |first3=Akbar |last4=Krüger |first4=Frank |last5=Uchoa |first5=Bruno |date=2019-10-01 |title=Quantum criticality of semi-Dirac fermions in 2 + 1 dimensions |url=https://link.aps.org/doi/10.1103/PhysRevB.100.155101 |journal=Physical Review B |language=en |volume=100 |issue=15 |page=155101 |doi=10.1103/PhysRevB.100.155101 |arxiv=1907.11810 |bibcode=2019PhRvB.100o5101U |issn=2469-9950}}</ref><ref>{{Cite journal |last1=Mohanta |first1=Narayan |last2=Ok |first2=Jong Mok |last3=Zhang |first3=Jie |last4=Miao |first4=Hu |last5=Dagotto |first5=Elbio |last6=Lee |first6=Ho Nyung |last7=Okamoto |first7=Satoshi |date=2021-12-10 |title=Semi-Dirac and Weyl fermions in transition metal oxides |url=https://journals.aps.org/prb/abstract/10.1103/PhysRevB.104.235121 |journal=Physical Review B |language=en |volume=104 |issue=23 |page=235121 |doi=10.1103/PhysRevB.104.235121 |arxiv=2106.07793 |bibcode=2021PhRvB.104w5121M |issn=2469-9950}}</ref> | ||
| Their first observation in a solid was in ] (ZrSiS), a ], and was published in 2024.<ref>{{Cite journal |last=Shao |first=Yinming |date=2024 |title=Semi-Dirac Fermions in a Topological Metal |url=https://journals.aps.org/prx/abstract/10.1103/PhysRevX.14.041057 |journal=Physical Review X |volume=14 |issue=4 |doi=10.1103/PhysRevX.14.041057}}</ref> | Their first observation in a solid was in ] (ZrSiS), a ], and was published in 2024.<ref>{{Cite journal |last=Shao |first=Yinming |date=2024 |title=Semi-Dirac Fermions in a Topological Metal |url=https://journals.aps.org/prx/abstract/10.1103/PhysRevX.14.041057 |journal=Physical Review X |volume=14 |issue=4 |page=041057 |doi=10.1103/PhysRevX.14.041057|arxiv=2311.03735 }}</ref> | ||
| == See also == | == See also == | ||
Revision as of 01:13, 14 December 2024
Class of fermionic quasiparticlesIn condensed matter physics, semi-Dirac fermions are a class of quasiparticles that are fermionic with the unusual property that their energy dispersion relation changes from quadratic to linear dependent on their direction of motion. Their theoretical properties have been studied for some time.
Their first observation in a solid was in zirconium silicon sulfide (ZrSiS), a topological semi-metal, and was published in 2024.
See also
References
- "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): 155101. arXiv:1907.11810. Bibcode:2019PhRvB.100o5101U. 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): 235121. arXiv:2106.07793. Bibcode:2021PhRvB.104w5121M. doi:10.1103/PhysRevB.104.235121. ISSN 2469-9950.
- Shao, Yinming (2024). "Semi-Dirac Fermions in a Topological Metal". Physical Review X. 14 (4): 041057. arXiv:2311.03735. doi:10.1103/PhysRevX.14.041057.
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