scholarly journals Fermi Surface Evolution, Pseudogap, and Staggered Gauge Field Fluctuations in Underdoped Cuprates

1998 ◽  
Vol 81 (10) ◽  
pp. 2136-2139 ◽  
Author(s):  
Xi Dai ◽  
Zhao-Bin Su
Keyword(s):  
Fermi Surface ◽  
Gauge Field ◽  
Surface Evolution ◽  
Field Fluctuations ◽  
Underdoped Cuprates

scholarly journals Fermi surface evolution in underdoped cuprates

1996 ◽  
Vol 74 (5) ◽  
pp. 563-571 ◽  
Author(s):  
Andrey V. Cnubukov ◽  
Dirk K. Morr ◽  
Konstantin A. Shakhnovich
Keyword(s):  
Fermi Surface ◽  
Surface Evolution ◽  
Underdoped Cuprates

scholarly journals Fermi surface evolution across multiple charge density wave transitions inErTe3

2010 ◽  
Vol 81 (7) ◽  
Author(s):  
R. G. Moore ◽  
V. Brouet ◽  
R. He ◽  
D. H. Lu ◽  
N. Ru ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Surface Evolution ◽  
Multiple Charge

scholarly journals Extent of Fermi-surface reconstruction in the high-temperature superconductor HgBa2CuO4+δ

2020 ◽  
Vol 117 (18) ◽  
pp. 9782-9786
Author(s):  
Mun K. Chan ◽  
Ross D. McDonald ◽  
B. J. Ramshaw ◽  
Jon B. Betts ◽  
Arkady Shekhter ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Surface Reconstruction ◽  
Field Measurements ◽  
Temperature Dependent ◽  
Crucial Issue ◽  
Critical Fields ◽  
Sign Change ◽  
Underdoped Cuprates ◽  
Upper Critical Fields ◽  
Fermi Surface Reconstruction

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. A crucial issue concerns the doping extent of such a state and its relationship to the principal pseudogap and superconducting phases. We employ pulsed magnetic-field measurements on the cuprate HgBa2CuO4+δ to identify signatures of Fermi-surface reconstruction from a sign change of the Hall effect and a peak in the temperature-dependent planar resistivity. We trace the termination of Fermi-surface reconstruction to two hole concentrations where the superconducting upper critical fields are found to be enhanced. One of these points is associated with the pseudogap endpoint near optimal doping. These results connect the Fermi-surface reconstruction to both superconductivity and the pseudogap phenomena.

Fermi surface evolution in the ensemble of spin-polarized quasiparticles in La2 − x Sr x CuO4

JETP Letters ◽  
2014 ◽  
Vol 98 (9) ◽  
pp. 528-533 ◽  
Author(s):  
D. M. Dzebisashvili ◽  
V. V. Val’kov ◽  
A. F. Barabanov
Keyword(s):  
Fermi Surface ◽  
Surface Evolution ◽  
Spin Polarized

Quantum oscillations in the high- T c cuprates

2011 ◽  
Vol 369 (1941) ◽  
pp. 1687-1711 ◽  
Author(s):  
Suchitra E. Sebastian ◽  
Neil Harrison ◽  
Gilbert G. Lonzarich
Keyword(s):  
Fermi Surface ◽  
Cuprate Superconductors ◽  
Low Energy ◽  
Quantum Oscillation ◽  
Electronic Excitations ◽  
Close Correspondence ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Quantum Oscillations ◽  
Underdoped Cuprates

We review recent progress in the study of quantum oscillations as a tool for uniquely probing low-energy electronic excitations in high- T c cuprate superconductors. Quantum oscillations in the underdoped cuprates reveal that a close correspondence with Landau Fermi-liquid behaviour persists in the accessed regions of the phase diagram, where small pockets are observed. Quantum oscillation results are viewed in the context of momentum-resolved probes such as photoemission, and evidence examined from complementary experiments for potential explanations for the transformation from a large Fermi surface into small sections. Indications from quantum oscillation measurements of a low-energy Fermi surface instability at low dopings under the superconducting dome at the metal–insulator transition are reviewed, and potential implications for enhanced superconducting temperatures are discussed.

scholarly journals U(1)×SU(2) Gauge Theory of Underdoped Cuprate Superconductors

1998 ◽  
Vol 12 (05) ◽  
pp. 173-180 ◽  
Author(s):  
P. A. Marchetti ◽  
Zhao-Bin Su ◽  
Lu Yu
Keyword(s):  
Gauge Theory ◽  
Fermi Surface ◽  
Transport Properties ◽  
Gauge Field ◽  
Spectral Function ◽  
Normal State ◽  
Doping Concentration ◽  
Cuprate Superconductors ◽  
Low Energy ◽  
Chern Simons

The U(1)×SU(2) Chern–Simons gauge theory is applied to study the 2D t–J model describing the normal state of underdoped cuprate superconductors. The U(1) field produces a flux phase for holons converting them into Dirac-like fermions, while the SU(2) field, due to the coupling to holons gives rise to a gap for spinons. An effective low-energy action involving holons, spinons and a self-generated U(1) gauge field is derived. The Fermi surface and electron spectral function obtained are consistent with photoemission experiments. The theory predicts a minimal gap proportional to doping concentration. It also explains anomalous transport properties.

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