Results 11 to 20 of about 7,151,360 (379)

Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa₂CuO_4+δ. [PDF]

Proc Natl Acad Sci U S A, 2020
High magnetic fields have revealed a surprisingly small Fermi-surface in underdoped cuprates, possibly resulting from Fermi-surface reconstruction due to an order parameter that breaks translational symmetry of the crystal lattice.
Chan MK, McDonald RD, Ramshaw BJ, Betts JB, Shekhter A, Bauer ED, Harrison N.   +6 more
europepmc   +2 more sources

Creating Majorana modes from segmented Fermi surface [PDF]

Nature Communications, 2021
Despite striking progress in promoting Majorana physics to topological quantum computation, there are many disadvantages in existing material platforms. Here, Papaj and Fu propose a new two-dimensional system for realization of Majorana physics based on ...
Michał Papaj, Liang Fu
doaj   +2 more sources

Quantum chaos on a critical Fermi surface. [PDF]

Proc Natl Acad Sci U S A, 2017
Significance All high-temperature superconductors exhibit a remarkable “strange metal” state above their critical temperatures. A theory of the strange metal is a prerequisite for a deeper understanding of high-temperature superconductivity, but the ...
Patel AA, Sachdev S.
europepmc   +3 more sources

Deformation of anisotropic Fermi surfaces due to electron-electron interactions [PDF]

Europhys. Lett. 76 (6), 1165-1171 (2006), 2006
We analyze the deformations of the Fermi surface induced by electron-electron interactions in anisotropic two dimensional systems. We use perturbation theory to treat, on the same footing, the regular and singular regions of the Fermi surface. It is shown that, even for weak local coupling, the self-energy presents a nontrivial behavior showing ...
Dzyaloshinskii J. E., Dzyaloshinskii J. E., F Guinea, Freire H., Friedel J., Kaminski A., Labbé J., Lederer F., Ledowski S., M. P López-Sancho, R Roldán, S.-W Tsai, Schulz H. J., Yoshida T.   +13 more
arxiv   +3 more sources

Fermi Surface of the 2D Hubbard Model at Weak Coupling [PDF]

, 1996
We calculate the interaction-induced deformation of the Fermi surface in the two-dimensional Hubbard model within second order perturbation theory. Close to half-filling, interactions enhance anisotropies of the Fermi surface, but they never modify the topology of the Fermi surface in the weak coupling regime.
Halboth, Christoph J., Metzner, Walter
arxiv   +3 more sources

Pseudogap phase of cuprate superconductors confined by Fermi surface topology. [PDF]

Nat Commun, 2017
The properties of cuprate high-temperature superconductors are largely shaped by competing phases whose nature is often a mystery. Chiefly among them is the pseudogap phase, which sets in at a doping p* that is material-dependent.
Doiron-Leyraud N, Cyr-Choinière O, Badoux S, Ataei A, Collignon C, Gourgout A, Dufour-Beauséjour S, Tafti FF, Laliberté F, Boulanger ME, Matusiak M, Graf D, Kim M, Zhou JS, Momono N, Kurosawa T, Takagi H, Taillefer L.   +17 more
europepmc   +3 more sources

Anomalous Chiral Fermi Surface

Physical Review Letters, 2012
We provide a geometrical argument for the emergence of a Wess-Zumino-Witten (WZW) term for a Fermi surface threaded by a Berry curvature. In the presence of external fields, the gauged WZW term yields a chiral (triangle) anomaly for the fermionic current
A. S. Gorsky, G. E. Volovik, Ismail Zahed, M. A. Nowak   +3 more
core   +5 more sources

Fermi surface topology and magnetotransport in semimetallic LuSb. [PDF]

Sci Rep, 2017
Several rare-earth monopnictides were shown to exhibit extreme magnetoresistance and field-induced low-temperature plateau of electrical resistivity. These features are also hallmarks of topological semimetals, thus the family is intensively explored ...
Pavlosiuk O, Kleinert M, Swatek P, Kaczorowski D, Wiśniewski P.   +4 more
europepmc   +2 more sources

Fermi-Surface Reconstruction in the Periodic Anderson Model [PDF]

J. Phys. Soc. Jpn. 78 (2009) 024715, 2008
We study ground state properties of periodic Anderson model in a two-dimensional square lattice with variational Monte Carlo method. It is shown that there are two different types of quantum phase transition: a conventional antiferromagnetic transition and a Fermi-surface reconstruction which accompanies a change of topology of the Fermi surface.
Araki S., Coleman P., De Leo L., Doniach S., Elgazzar S., Goh S. K., Hertz J. A., Lanatà N., Martin L. C., Millis A. J., Miyake K., Moriya T., Norman M. R., Ohira-Kawamura S., Paschen S., Paul I., Pépin C., Senthil T., Settai R., Shiba H., Shishido H., Shishido H., Si Q., Watanabe H.   +23 more
arxiv   +3 more sources

Deformation of the Fermi surface of a spinless two-dimensional electron gas in presence of an anisotropic Coulomb interaction potential [PDF]

Scientific Reports, 2021
We consider the stability of the circular Fermi surface of a two-dimensional electron gas system against an elliptical deformation induced by an anisotropic Coulomb interaction potential.
Orion Ciftja
doaj   +2 more sources