scholarly journals Energy Scale of the Charge Density Wave in Cuprate Superconductors

Proceedings ◽  
2019 ◽  
Vol 26 (1) ◽  
pp. 20
Author(s):  
Sacuto ◽  
Loret ◽  
Auvray ◽  
Civelli ◽  
Indranil ◽  
...  
Keyword(s):  
High Temperature ◽  
Charge Density ◽  
Charge Density Wave ◽  
Cuprate Superconductors ◽  
High Temperature Superconductors ◽  
Density Wave ◽  
Energy Scale ◽  
Hole Doping ◽  
Wide Range

The cuprate high temperature superconductors develop spontaneous charge density wave(CDW) order below a temperature TCDW and over a wide range of hole doping (p). [...]

SOFT-PLASMON MECHANISM FOR HIGH-TEMPERATURE SUPERCONDUCTIVITY

1987 ◽  
Vol 01 (03n04) ◽  
pp. 965-971 ◽  
Author(s):  
J. ASHKENAZI ◽  
C.G. KUPER ◽  
R. TYK
Keyword(s):  
High Temperature ◽  
Charge Density ◽  
Charge Density Wave ◽  
High Temperature Superconductivity ◽  
High Temperature Superconductors ◽  
Density Wave ◽  
Cooper Pairs ◽  
Strong Electron ◽  
Metal Insulator ◽  
Order Of Magnitude

Recently-discovered high-temperature superconductors border on a Mott metal insulator transition; pure La2CuO4 undergoes a commensurate charge-density-wave transition and becomes an insulator. At other compositions, the incipient charge-density wave causes a drastic softening of those plasmon modes with wave vectors connecting points on the Fermi surface. These soft plasmons (typically tenths of an electron-volt) serve as the attraction which binds Cooper pairs, instead of the usual phonons. Consequently, transition temperatures are an order of magnitude larger than for phonon-induced superconductivity. One of the factors responsible for the strong electron - plasmon coupling is the influence of the empty f-orbitals of La or Ba.

Method of interlayer tunneling for studies of layered high temperature superconductors and charge density wave materials

2006 ◽  
Vol 3 (9) ◽  
pp. 3110-3113 ◽  
Author(s):  
Yu. I. Latyshev ◽  
P. Monceau ◽  
S. A. Brazovskii ◽  
A. P. Orlov ◽  
T. Yamashita ◽  
...  
Keyword(s):  
High Temperature ◽  
Charge Density ◽  
Charge Density Wave ◽  
High Temperature Superconductors ◽  
Density Wave

scholarly journals О природе магнитных осцилляций в высокотемпературных сверхпроводниках YBCO

2019 ◽  
Vol 61 (9) ◽  
pp. 1579
Author(s):  
П.Д. Григорьев ◽  
Т.И. Могилюк ◽  
Асет Хамзаулы
Keyword(s):  
High Temperature ◽  
Fermi Surface ◽  
Charge Density ◽  
Charge Density Wave ◽  
High Temperature Superconductors ◽  
Density Wave ◽  
Low Frequency ◽  
The Difference ◽  
Magnetic Oscillations

AbstractPossible causes of magnetic oscillations with a low frequency of about 2% of the Brillouin zone, observed in high-temperature superconductors of the YBCO family, are studied. A scenario is proposed in which the observed frequency is proportional to the difference of the bilayer-split closed pockets in the Fermi surface rebuilt due to scattering to charge-density-wave vectors. A method is proposed for experimental determination of which of the four possible scenarios for the rise of these magnetic oscillations is realized in YBCO.

scholarly journals Superconductivity in the doped Hubbard model and its interplay with next-nearest hopping t′

Science ◽  
2019 ◽  
Vol 365 (6460) ◽  
pp. 1424-1428 ◽  
Author(s):  
Hong-Chen Jiang ◽  
Thomas P. Devereaux
Keyword(s):  
Hubbard Model ◽  
Charge Density ◽  
Spin Density ◽  
Charge Density Wave ◽  
Large Scale ◽  
Nearest Neighbor ◽  
High Temperature Superconductivity ◽  
Density Wave ◽  
Spin Density Wave ◽  
Hole Doping

The Hubbard model is widely believed to contain the essential ingredients of high-temperature superconductivity. However, proving definitively that the model supports superconductivity is challenging. Here, we report a large-scale density matrix renormalization group study of the lightly doped Hubbard model on four-leg cylinders at hole doping concentration δ = 12.5%. We reveal a delicate interplay between superconductivity and charge density wave and spin density wave orders tunable via next-nearest neighbor hopping t′. For finite t′, the ground state is consistent with a Luther-Emery liquid with power-law superconducting and charge density wave correlations associated with half-filled charge stripes. In contrast, for t′ = 0, superconducting correlations fall off exponentially, whereas charge density and spin density modulations are dominant. Our results indicate that a route to robust long-range superconductivity involves destabilizing insulating charge stripes in the doped Hubbard model.

scholarly journals Ideal charge-density-wave order in the high-field state of superconducting YBCO

2016 ◽  
Vol 113 (51) ◽  
pp. 14645-14650 ◽  
Author(s):  
H. Jang ◽  
W.-S. Lee ◽  
H. Nojiri ◽  
S. Matsuzawa ◽  
H. Yasumura ◽  
...  
Keyword(s):  
Charge Density ◽  
Critical Field ◽  
Ground State ◽  
Charge Density Wave ◽  
High Field ◽  
Cuprate Superconductors ◽  
Density Wave ◽  
Quantum Oscillation ◽  
Zero Field ◽  
Correlation Volume

The existence of charge-density-wave (CDW) correlations in cuprate superconductors has now been established. However, the nature of the CDW ground state has remained uncertain because disorder and the presence of superconductivity typically limit the CDW correlation lengths to only a dozen unit cells or less. Here we explore the field-induced 3D CDW correlations in extremely pure detwinned crystals of YBa2Cu3O2(YBCO) ortho-II and ortho-VIII at magnetic fields in excess of the resistive upper critical field (Hc2) where superconductivity is heavily suppressed. We observe that the 3D CDW is unidirectional and possesses a long in-plane correlation length as well as significant correlations between neighboring CuO2planes. It is significant that we observe only a single sharply defined transition at a critical field proportional toHc2, given that the field range used in this investigation overlaps with other high-field experiments including quantum oscillation measurements. The correlation volume is at least two to three orders of magnitude larger than that of the zero-field CDW. This is by far the largest CDW correlation volume observed in any cuprate crystal and so is presumably representative of the high-field ground state of an “ideal” disorder-free cuprate.

New Polytype of the Quasi-One-Dimensional Conductor NbS3 with a High-Temperature Charge Density Wave

JETP Letters ◽  
2021 ◽  
Vol 114 (1) ◽  
pp. 40-44
Author(s):  
S. G. Zybtsev ◽  
N. Yu. Tabachkova ◽  
V. Ya. Pokrovskii ◽  
S. A. Nikonov ◽  
A. A. Maizlakh ◽  
...  
Keyword(s):  
High Temperature ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
One Dimensional
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