scholarly journals Charge Order Driven by Fermi-Arc Instability in Bi2Sr2-xLaxCuO6+ 

Science ◽  
2013 ◽  
Vol 343 (6169) ◽  
pp. 390-392 ◽  
Author(s):  
R. Comin ◽  
A. Frano ◽  
M. M. Yee ◽  
Y. Yoshida ◽  
H. Eisaki ◽  
...  
Keyword(s):  
Charge Order ◽  
Fermi Arc ◽  
Arc Instability

Nature of charge order in cuprate superconductors

2016 ◽  
Vol 30 (13) ◽  
pp. 1642005
Author(s):  
Shiping Feng ◽  
Deheng Gao ◽  
Huaisong Zhao
Keyword(s):  
Hot Spots ◽  
Cuprate Superconductors ◽  
Charge Order ◽  
Theoretical Work ◽  
Fermi Arc ◽  
Self Energy ◽  
Fermi Arcs ◽  
Arc Instability ◽  
Microscopic Origin ◽  
Order State

The recently discovered charge order is an intrinsic and universal property of cuprate superconductors, however, its microscopic origin remains debated. Here we review briefly the theoretical work about the nature of charge order in cuprate superconductors. In particular, we show that the electron self-energy obliterates the electron Fermi surface around the antinodal region, leaving behind disconnected Fermi arcs located around the nodal region. The charge-order state on the other hand is driven by the Fermi-arc instability, with a characteristic wavevector corresponding to the hot spots of the Fermi arcs rather than the antinodal nesting vector. Since the pseudogap emanates from the electron self-energy, the Fermi arc, charge order, and pseudogap in cuprate superconductors are intimately related each other.

Fermi-arc superconductivity, pseudogap and charge order in Bi2Sr2CaCu2O8+δ

2008 ◽  
Vol 69 (9) ◽  
pp. 2265-2267
Author(s):  
T. Kurosawa ◽  
M. Oda ◽  
Y.H. Liu ◽  
K. Takeyama ◽  
N. Momono ◽  
...  
Keyword(s):  
Charge Order ◽  
Fermi Arc

scholarly journals On the relations among the pseudogap, electronic charge order and Fermi-arc superconductivity in Bi2Sr2CaCu2O8+δ

2008 ◽  
Vol 108 ◽  
pp. 012008 ◽  
Author(s):  
M Oda ◽  
Y H Liu ◽  
T Kurosawa ◽  
K Takeyama ◽  
N Momono ◽  
...  
Keyword(s):  
Charge Order ◽  
Electronic Charge ◽  
Fermi Arc

scholarly journals Observation of a singular Weyl point surrounded by charged nodal walls in PtGa

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
J.-Z. Ma ◽  
Q.-S. Wu ◽  
M. Song ◽  
S.-N. Zhang ◽  
E. B. Guedes ◽  
...  
Keyword(s):  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Photoemission Spectroscopy ◽  
Functional Theory ◽  
Fermi Arc ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Fermi Arcs ◽  
Surface Projection ◽  
Applicable Range ◽  
Opposite Chirality

AbstractConstrained by the Nielsen-Ninomiya no-go theorem, in all so-far experimentally determined Weyl semimetals (WSMs) the Weyl points (WPs) always appear in pairs in the momentum space with no exception. As a consequence, Fermi arcs occur on surfaces which connect the projections of the WPs with opposite chiral charges. However, this situation can be circumvented in the case of unpaired WP, without relevant surface Fermi arc connecting its surface projection, appearing singularly, while its Berry curvature field is absorbed by nontrivial charged nodal walls. Here, combining angle-resolved photoemission spectroscopy with density functional theory calculations, we show experimentally that a singular Weyl point emerges in PtGa at the center of the Brillouin zone (BZ), which is surrounded by closed Weyl nodal walls located at the BZ boundaries and there is no Fermi arc connecting its surface projection. Our results reveal that nontrivial band crossings of different dimensionalities can emerge concomitantly in condensed matter, while their coexistence ensures the net topological charge of different dimensional topological objects to be zero. Our observation extends the applicable range of the original Nielsen-Ninomiya no-go theorem which was derived from zero dimensional paired WPs with opposite chirality.

Control of charge order melting through local memristive migration of oxygen vacancies

2018 ◽  
Vol 2 (5) ◽  
Author(s):  
Zhi-Hong Wang ◽  
Q. H. Zhang ◽  
G. Gregori ◽  
G. Cristiani ◽  
Y. Yang ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Charge Order

Copropagating Photonic Fermi Arc Channels for Multiplexing and Dynamically Routing Topological Surface Waves

2021 ◽  
Vol 15 (4) ◽  
pp. 2000360
Author(s):  
Jinying Guo ◽  
Biao Yang ◽  
Shaojie Ma ◽  
Hsun‐Chi Chan ◽  
Guohai Situ ◽  
...  
Keyword(s):  
Surface Waves ◽  
Fermi Arc ◽  
Topological Surface
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