ON THE PHASE DIAGRAM OF HIGH TC CUPRATES

ABSTRACTWe have discovered 24 K-superconductivity in a family of compounds Ln2−xCexCuO4−y (Ln=Pr, Nd, Sm). Novel feature of the superconductivity in these family of compounds is that superconductivity is produced by electron-doping in sharp contrast with high-Tc cuprates discovered so far. The effect of doping on physical properties particularly the elecronic phase diagram and transport coefficients which indicate symmetry in many respects between electron- and hole- doping is described.

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SUPERCONDUCTIVITY AND TYPES OF GAP IN HIGH-Tc CUPRATES

International Journal of Modern Physics B ◽

10.1142/s0217979201007427 ◽

2001 ◽

Vol 15 (27) ◽

pp. 3513-3528 ◽

Cited By ~ 1

Author(s):

FU-SUI LIU ◽

WAN-FANG CHEN

Keyword(s):

Phase Diagram ◽

Long Range ◽

Phase Coherence ◽

Xy Model ◽

Superconducting Gap ◽

Band Model ◽

High Tc ◽

Local Spin ◽

High Tc Cuprates

This paper extends the two-local-spin-mediated interaction from three- to four-band model, gives two T c formulas using long-range phase coherence condition in quantum and classical XY-models, phase diagram, and types of the gap in Bi 2 Sr 2 CaCu 2 O 8+δ (Bi2212). This paper argues that the superconducting gap and the pseudogap are the same gap just at different temperature regions. This paper also argues that the values of T c versus x should be determined by the long-range phase coherence conditions in the classical and quantum XY-model for underdoped and overdoped regions, respectively.

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Re-Examination of Electronic Phase Diagram of Electron-Doped High-TC Cuprates: Absence of Insulating Phase?

JPSJ News and Comments ◽

10.7566/jpsjnc.10.11 ◽

2013 ◽

Vol 10 ◽

pp. 11

Author(s):

Setsuko Tajima

Keyword(s):

Phase Diagram ◽

High Tc ◽

Electronic Phase ◽

Electronic Phase Diagram ◽

Insulating Phase ◽

High Tc Cuprates

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Mapping and Exploiting the Superconducting Phase Diagram in High-Tc Cuprates

Advances in Superconductivity V ◽

10.1007/978-4-431-68305-6_74 ◽

1993 ◽

pp. 339-344 ◽

Cited By ~ 1

Author(s):

J. L. Tallon ◽

J. R. Cooper

Keyword(s):

Phase Diagram ◽

Superconducting Phase ◽

High Tc ◽

High Tc Cuprates

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DEPENDENCE OF MAGNETIC SUSCEPTIBILITY ON THE NEXT NEAREST HOPPING TERM FOR HIGH TC CUPRATES

International Journal of Modern Physics B ◽

10.1142/s0217979207044020 ◽

2007 ◽

Vol 21 (18n19) ◽

pp. 3132-3137 ◽

Cited By ~ 3

Author(s):

JAE-GON EOM ◽

JAE-HYEON EOM ◽

SUNG-HO SUCK SALK

Keyword(s):

Phase Diagram ◽

Magnetic Susceptibility ◽

Hole Concentration ◽

Resonance Energy ◽

Spin Susceptibility ◽

Resonance Peak ◽

High Tc ◽

Doping Dependence ◽

Spin Singlet ◽

High Tc Cuprates

In view of increasing emphasis on the use of next-nearest hopping t' term in the t - J Hamiltonian, we examine its effect on the spin susceptibility and its correlation with the structure of phase diagram. We find from this study that the resonance peak of spin susceptibility rapidly decreases with hole concentration in the overdoped region at which the spin singlet pairing order diminishes. It is shown that the doping dependence of resonance energy in both underdoped and overdoped regions is in agreement with observations.

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