scholarly journals Universal doping dependence of the ground-state staggered magnetization of cuprate superconductors

2008 ◽  
Vol 78 (14) ◽  
Author(s):  
Rinat Ofer ◽  
Amit Keren ◽  
Omar Chmaissem ◽  
Alex Amato
Keyword(s):  
Ground State ◽  
Cuprate Superconductors ◽  
Doping Dependence

scholarly journals MAGNETIC FIELD TUNING OF CHARGE AND SPIN ORDER IN THE CUPRATE SUPERCONDUCTORS

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3156-3163 ◽  
Author(s):  
A. POLKOVNIKOV ◽  
S. SACHDEV ◽  
M. VOJTA ◽  
E. DEMLER
Keyword(s):  
Magnetic Field ◽  
Ground State ◽  
Charge Density Wave ◽  
Cuprate Superconductors ◽  
Density Wave ◽  
Spin Density Wave ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Spin Order ◽  
New Information

Recent neutron scattering, nuclear magnetic resonance, and scanning tunneling microscopy experiments have yielded valuable new information on the interplay between charge and spin density wave order and superconductivity in the cuprate superconductors, by using a perpendicular magnetic field to tune the ground state properties. We compare the results of these experiments with the predictions of a theory which assumed that the ordinary superconductor was proximate to a quantum transition to a superconductor with co-existing spin/charge density wave order.

Doping and energy dependences of thermal conductivity in cuprate superconductors

2017 ◽  
Vol 31 (27) ◽  
pp. 1750344 ◽  
Author(s):  
Chunsheng Ma ◽  
Rui Qi ◽  
Feng Yuan ◽  
Shaou Chen ◽  
Huaisong Zhao
Keyword(s):  
Thermal Conductivity ◽  
Doping Concentration ◽  
Cuprate Superconductors ◽  
The Other ◽  
Characteristic Peak ◽  
Characteristic Energy ◽  
Doping Dependence ◽  
Pseudogap Phase ◽  
In Doping ◽  
The One

By considering the pseudogap effect, the doping and energy dependences of thermal conductivity in cuprate superconductors are studied. Our results show that the thermal conductivity as a function of energy exhibits a characteristic peak from underdoping to overdoping due to the presence of the pseudogap in pseudogap phase of cuprate superconductors. The thermal conductivity is strongly doping dependent. On the one hand, with increasing doping concentration, the weight of thermal conductivity increases quickly, especially the residual thermal conductivity which is in qualitative agreement with the experimental data. On the other hand, the characteristic energy corresponding to the position of the characteristic peak decreases monotonically upon increasing doping concentration, and it scales with the doping dependence of pseudogap. In particular, we have studied the doping dependence of the ratio of quasiparticle velocities normal and tangential to the Fermi surface at the nodes [Formula: see text]. It is shown that [Formula: see text] increases with the increase of doping concentration. Moreover, we explain that both the residual thermal conductivity and [Formula: see text] increase rapidly upon the increase in doping concentration in heavily overdoped cuprate superconductors.

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.

SPIN DYNAMICS IN BILAYER CUPRATE SUPERCONDUCTORS

2012 ◽  
Vol 26 (20) ◽  
pp. 1250129
Author(s):  
YU LAN ◽  
JIHONG QIN
Keyword(s):  
Magnetic Resonance ◽  
Kinetic Energy ◽  
Cuprate Superconductors ◽  
Spin Dynamics ◽  
Resonance Energy ◽  
Magnetic Scattering ◽  
Doping Dependence ◽  
Dynamical Spin ◽  
Spin Response

Within the kinetic energy driven superconducting mechanism, the dynamical spin response of the bilayer cuprate superconductors is studied. It is shown that there are two nondegenerate magnetic modes with odd and even symmetries, respectively, due to the bilayer interaction in the bilayer cuprate superconductors. Although the magnetic scattering in both odd and even symmetries shows an hour-glass-shaped dispersion, the commensurate magnetic resonance energy in the odd symmetry has a domelike shape of the doping dependence, while the commensurate magnetic resonance energy in the even symmetry decreases with increasing doping.

scholarly journals Doping dependence of Meissner effect in cuprate superconductors

2010 ◽  
Vol 470 (21) ◽  
pp. 1968-1976 ◽  
Author(s):  
Shiping Feng ◽  
Zheyu Huang ◽  
Huaisong Zhao
Keyword(s):  
Cuprate Superconductors ◽  
Meissner Effect ◽  
Doping Dependence

scholarly journals Raman Scattering in Cuprate Superconductors

1997 ◽  
Vol 11 (18) ◽  
pp. 2093-2118 ◽  
Author(s):  
Thomas Peter Devereaux ◽  
Arno Paul Kampf
Keyword(s):  
Low Temperature ◽  
Raman Scattering ◽  
Raman Spectra ◽  
Cuprate Superconductors ◽  
Energy Gap ◽  
Low Frequency ◽  
Temperature Behavior ◽  
Doping Dependence ◽  
Electronic Raman Scattering ◽  
Effects Of Disorder

A theory for electronic Raman scattering in the cuprate superconductors is presented with a specific emphasis on the polarization dependence of the spectra which can infer the symmetry of the energy gap. Signatures of the effects of disorder on the low frequency and low temperature behavior of the Raman spectra for different symmetry channels provide detailed information about the magnitude and the phase of the energy gap. Properties of the theory for finite T will be discussed and compared to recent data concerning the doping dependence of the Raman spectra in cuprate superconductors, and remaining questions will be addressed.

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