In the field of unconventional superconductivity, a Fermi arc[1] is a phenomenon visible in the pseudogap state of a superconductor. Seen in momentum space, part of the space exhibits a gap in the density of states, like in a superconductor. This starts at the antinodal points, and spreads through momentum space when lowering the temperature until everywhere is gapped and the sample is superconducting. The area in momentum space that remains ungapped is called the Fermi arc.[2]
Fermi arcs also appear in some materials with topological properties such as Weyl semimetals where they represent a surface projection of a two dimensional Fermi contour and are terminated onto the projections of the Weyl fermion nodes on the surface.
^Schrunk, Benjamin; Kushnirenko, Yevhen; Kuthanazhi, Brinda; Ahn, Junyeong; Wang, Lin-Lin; O’Leary, Evan; Lee, Kyungchan; Eaton, Andrew; Fedorov, Alexander; Lou, Rui; Voroshnin, Vladimir (March 2022). "Emergence of Fermi arcs due to magnetic splitting in an antiferromagnet". Nature. 603 (7902): 610–615. arXiv:2203.12511. doi:10.1038/s41586-022-04412-x. ISSN 1476-4687. PMID 35322253. S2CID 247619143.
^Tao Li and Qiang Han (2011). "On the origin of the Fermi arc phenomenon in the underdoped cuprates: signature of KT-type superconducting transition". Journal of Physics: Condensed Matter. 23 (10): 105603–105608. arXiv:1003.1783. Bibcode:2011JPCM...23j5603L. doi:10.1088/0953-8984/23/10/105603. PMID 21335633. S2CID 206033159.
In the field of unconventional superconductivity, a Fermiarc is a phenomenon visible in the pseudogap state of a superconductor. Seen in momentum space...
to demonstrate Fermiarc electron states on its surface. These arcs are discontinuous or disjoint segments of a two dimensional Fermi contour, which are...
the femtometre Fermiarc, a phenomenon in superconductivity Fermi constant, constant that gives the strength of Fermi's interaction Fermi contact interaction...
observable feature of Weyl semimetals is that the surface states form Fermiarcs since the Fermi surface does not form a closed loop. In crystals that are symmetric...
graphene and topological insulators. In these materials, at energies near the Fermi level, the valence band and conduction band take the shape of the upper...
The Fermi surface therefore consists of Fermiarcs forming pockets centered on the corner of the Brillouin zone. In the pseudogap phase these arcs gradually...
(16 July 2015). "Discovery of a Weyl fermion semimetal and topological Fermiarcs". Science. 349 (6248). AAAS: 613–617. arXiv:1502.03807. Bibcode:2015Sci...
et al. (2015). "Discovery of a Weyl Fermion semimetal and topological Fermiarcs". Science Magazine. 349 (6248). AAAS: 613–617. arXiv:1502.03807. Bibcode:2015Sci...
Hasan (2015). "Discovery of a Weyl Fermion semimetal and topological Fermiarcs". Science. 349 (6248): 613–617. arXiv:1502.03807. Bibcode:2015Sci...349...
the Fermi level at the surface. This can be seen on a band diagram. The Fermi level defines the type of semiconductor in discussion. If the Fermi level...
"Chiral topological semimetal with multifold band crossings and long Fermiarcs". Nature Physics. 15 (8): 759–765. arXiv:1812.03310. Bibcode:2019NatPh...
predicted to become more metallic under pressure. MoTe2 exhibits topological Fermiarcs. This is evidence for a new type (type-II) of Weyl fermion that arises...
technique can be employed to reconstruct a Fermi surface from the electronic Bloch spectral function evaluated at the Fermi level, as obtained from the Green's...
August 2015). "Discovery of a Weyl fermion semimetal and topological Fermiarcs". Science. 349 (6248): 613–617. arXiv:1502.03807. Bibcode:2015Sci...349...
Zhu-An; Wan, Xian-Gang; Feng, Dong-Lai (18 September 2015). "Observation of FermiArcs in Non-Centrosymmetric Weyl Semi-Metal Candidate NbP". Chinese Physics...
$6,000 in funding, most of which Fermi and Szilard spent on graphite. A team of Columbia professors including Fermi, Szilard, Eugene T. Booth and John...
Magnetoresistance of inhomogeneous semiconductors, and, ultracold atomic Fermi gases, was supervised by Peter Littlewood. After postdoctoral research as...
in random directions, like the particles of a gas. (More accurately, a Fermi gas.) To create a net flow of charge, the particles must also move together...
Press, 2001. Proceedings of the International School of Physics "Enrico Fermi". pp. 142–143. ISBN 9781586031671. "Compton wavelength over 2 pi". The NIST...
The femtometre, used mainly in particle physics, is sometimes called a fermi. For large scales, megametre, gigametre, and larger are rarely used. Instead...
chain-reaction, so long as fission also produced neutrons. In 1939, with Enrico Fermi, Szilárd proved this neutron-multiplying reaction in uranium. In this reaction...
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