Effects of Ce and F substitutions on the electronic structure of Nd2CuO4 superconductors
Bal K. Agrawal, Savitri Agrawal, P. S. Yadav, Sudhir Kumar
DOI 10.1103/PhysRevB.43.1166 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The changes incurred by the replacement of Nd (or O) by Ce (or F) atoms on the electronic energy states of the superconducting Nd2CuO4 compounds have been investigated in a tight-binding approximation. A minimum number of parameters have been employed in the calculation. The various peaks observed in the direct and inverse photoemission data of Reihl et al. are well explained. The calculated shift in Fermi level with x (or y) in Nd2−xCexCuO4 (or Nd2CuO4−yFy) is seen to be in agreement with the experiment. Further, our model detects an unoccupied Cu 4s band just at the conduction-band edge, as has been detected in electron-spin-resonance experiments.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 25 | Pressure not reported | onset |
| Nd2CuO4-yFy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 27 | Pressure not reported | unknown |
Similar papers
Effect of a magnetic field on the long-range magnetic order in insulating Nd2CuO4 and nonsuperconducting and superconducting Nd1.85Ce0.15CuO4
similarity 0.97M. Matsuura et al.
Source status unknown — claims are unverified
Two characteristic energies in the low-energy magnetic response of the electron-doped high-temperature superconductor Nd2−xCexCuO4+δ
similarity 0.96G. Yu et al.
Source status unknown — claims are unverified
Phonons and superconductivity in Nd2−xCexCuO4
similarity 0.95H. Chen & J. Callaway
Source status unknown — claims are unverified
Local structure around F in the fluorine-doped Nd2CuO4 superconductor
similarity 0.95A. Krol et al.
Source status unknown — claims are unverified
Effect of Ce doping on the Cu charge in the electron superconductor Nd2−xCexCuO4
similarity 0.95E. E. Alp et al.
Source status unknown — claims are unverified
Microwave Electrodynamics of Electron-Doped Cuprate Superconductors
similarity 0.95J. David Kokales et al.
Source status unknown — claims are unverified