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.

AN EXACTLY SOLVABLE FERMION MODEL: SPINONS, HOLONS AND A NON-FERMI LIQUID PHASE

1991 ◽  
Vol 05 (09) ◽  
pp. 643-649 ◽  
Author(s):  
G. BASKARAN
Keyword(s):  
Liquid Phase ◽  
Fermi Surface ◽  
Electron Concentration ◽  
Fermi Liquid ◽  
Low Energy ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Limited Region ◽  
Fermion Model ◽  
Exactly Solvable

An interacting fermion model in d-dimensions is introduced and solved exactly. Low energy excitations have complete spin-charge decoupling. The holon spectrum is gapless and exhibits a pseudo-Fermi surface. Spinons have a gap and, as in the 1-D Hubbard model, the spinons exist only in a limited region of the Brillouin Zone. As a function of electron concentration the system exhibits metal insulator transition.

Fermi-surface reconstruction close to a pressure-induced metal-insulator transition

2004 ◽  
Vol 114 ◽  
pp. 277-281 ◽  
Author(s):  
J. Wosnitza ◽  
J. Hagel ◽  
O. Stockert ◽  
C. Pfleiderer ◽  
J. A. Schlueter ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Surface Reconstruction ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Fermi Surface Reconstruction

Quantum oscillations and the Fermi surface of high-temperature cuprate superconductors

2011 ◽  
Vol 12 (5-6) ◽  
pp. 446-460 ◽  
Author(s):  
Baptiste Vignolle ◽  
David Vignolles ◽  
David LeBoeuf ◽  
Stéphane Lepault ◽  
Brad Ramshaw ◽  
...  
Keyword(s):  
High Temperature ◽  
Fermi Surface ◽  
Cuprate Superconductors ◽  
Quantum Oscillations

scholarly journals Fermi surface properties of the bifunctional organic metal κ−(BETS)2Mn[N(CN)2]3 near the metal-insulator transition

2019 ◽  
Vol 99 (12) ◽  
Author(s):  
V. N. Zverev ◽  
W. Biberacher ◽  
S. Oberbauer ◽  
I. Sheikin ◽  
P. Alemany ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Surface Properties ◽  
Insulator Transition ◽  
Organic Metal ◽  
Metal Insulator Transition ◽  
Metal Insulator

scholarly journals Large Fermi Surface of Heavy Electrons at the Border of Mott Insulating State in NiS2

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
S. Friedemann ◽  
H. Chang ◽  
M. B. Gamża ◽  
P. Reiss ◽  
X. Chen ◽  
...  
Keyword(s):  
High Pressure ◽  
Fermi Surface ◽  
Quantum Physics ◽  
Mott Transition ◽  
Electrostatic Repulsion ◽  
Strong Correlations ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Alternative Scenarios ◽  
Rule Out

Abstract One early triumph of quantum physics is the explanation why some materials are metallic whereas others are insulating. While a treatment based on single electron states is correct for most materials this approach can fail spectacularly, when the electrostatic repulsion between electrons causes strong correlations. Not only can these favor new and subtle forms of matter, such as magnetism or superconductivity, they can even cause the electrons in a half-filled energy band to lock into position, producing a correlated, or Mott insulator. The transition into the Mott insulating state raises important fundamental questions. Foremost among these is the fate of the electronic Fermi surface and the associated charge carrier mass, as the Mott transition is approached. We report the first direct observation of the Fermi surface on the metallic side of a Mott insulating transition by high pressure quantum oscillatory measurements in NiS2. Our results point at a large Fermi surface consistent with Luttinger’s theorem and a strongly enhanced quasiparticle effective mass. These two findings are in line with central tenets of the Brinkman-Rice picture of the correlated metal near the Mott insulating state and rule out alternative scenarios in which the carrier concentration vanishes continuously at the metal-insulator transition.

scholarly journals Fermi surface ofLaRu4P12: A clue to the origin of the metal-insulator transition inPrRu4P12

2005 ◽  
Vol 71 (13) ◽  
Author(s):  
S. R. Saha ◽  
H. Sugawara ◽  
Y. Aoki ◽  
H. Sato ◽  
Y. Inada ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

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.

Sign in / Sign up

Export Citation Format

Share Document