Depression of the zero-temperature superfluid density in YBa2Cu3O7/PrBa2Cu3O7 heterostructures

1994 ◽  
Vol 235-240 ◽  
pp. 1801-1802 ◽  
Author(s):  
D. Ariosa ◽  
T. Luthy ◽  
C. Cao ◽  
J. Perret ◽  
P. Martinoli
Keyword(s):  
Superfluid Density ◽  
Zero Temperature

DOPING AND TEMPERATURE DEPENDENCE OF SUPERFLUID DENSITY IN KINETIC ENERGY DRIVEN CUPRATE SUPERCONDUCTORS

2010 ◽  
Vol 24 (29) ◽  
pp. 2845-2854
Author(s):  
ZHEYU HUANG ◽  
HUAISONG ZHAO ◽  
SHIPING FENG
Keyword(s):  
Transition Temperature ◽  
Kinetic Energy ◽  
Temperature Dependence ◽  
Low Temperatures ◽  
Cuprate Superconductors ◽  
Superfluid Density ◽  
Linear Temperature Dependence ◽  
Superconducting Transition ◽  
Zero Temperature ◽  
Linear Temperature

Within the kinetic energy driven superconducting mechanism, the doping and temperature dependence of the superfluid density in cuprate superconductors is studied throughout the superconducting dome. It is shown that the superfluid density shows a crossover from the linear temperature dependence at low temperatures to a nonlinear one in the extremely low temperatures. In analogy to the dome-like shape of the doping dependent superconducting transition temperature, the maximal zero-temperature superfluid density occurs around the critical doping δ ≈ 0.195, and then decreases in both lower doped and higher doped regimes.

scholarly journals Possible superconductivity from incoherent carriers in overdoped cuprates

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Culo ◽  
C. Duffy ◽  
J. Ayres ◽  
M. Berben ◽  
Yi-Ting Hsu ◽  
...  
Keyword(s):  
Normal State ◽  
Superfluid Density ◽  
The Other ◽  
Bcs Theory ◽  
Hole Doping ◽  
Compelling Evidence ◽  
Zero Temperature ◽  
Incoherent Transport ◽  
Doping Range ◽  
Quasiparticle Excitations

There is now compelling evidence that the normal state of superconducting overdoped cuprates is a strange metal comprising two distinct charge sectors, one governed by coherent quasiparticle excitations, the other seemingly incoherent and characterized by non-quasiparticle (Planckian) dissipation. The zero-temperature superfluid density n_s(0)ns(0) of overdoped cuprates exhibits an anomalous depletion with increased hole doping pp, falling to zero at the edge of the superconducting dome. Over the same doping range, the effective zero-temperature Hall number n_{\rm H}(0) transitions from pp to 1 + pp. By taking into account the presence of these two charge sectors, we demonstrate that in the overdoped cuprates Tl_22Ba_22CuO_{6+\delta}6+δ and La_{2-x}2−xSr_xxCuO_44, the growth in n_s(0)ns(0) as pp is decreased from the overdoped side may be compensated by the loss of carriers in the coherent sector. Such a correspondence is contrary to expectations from conventional BCS theory and implies that superconductivity in overdoped cuprates emerges uniquely from the sector that exhibits incoherent transport in the normal state.

PRESSURE DEPENDENCE OF THE SUPERFLUID DENSITY IN 3He-B

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-37-C6-38 ◽  
Author(s):  
C. N. Archie ◽  
T. A. Alvesalo ◽  
J. E. Bethold ◽  
J. D. Reppy ◽  
R. C. Richardson
Keyword(s):  
Pressure Dependence ◽  
Superfluid Density

Erratum: Dilute spin glass at zero temperature in general dimension

1991 ◽  
Vol 43 (16) ◽  
pp. 13684-13685
Author(s):  
Lior Klein ◽  
Joan Adler ◽  
Amnon Aharony ◽  
A. B. Harris ◽  
Yigal Meir
Keyword(s):  
Spin Glass ◽  
Zero Temperature ◽  
General Dimension
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