Doping Dependence of an n-Type Cuprate Superconductor Investigated by Angle-Resolved Photoemission Spectroscopy
N. P. Armitage, F. Ronning, D. H. Lu, C. Kim, A. Damascelli, K. M. Shen, D. L. Feng, H. Eisaki, Z.-X. Shen, P. K. Mang, N. Kaneko, M. Greven, Y. Onose, Y. Taguchi, Y. Tokura
DOI 10.1103/PhysRevLett.88.257001 · Physical Review Letters
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
We present an angle-resolved photoemission doping dependence study of the n-type cuprate superconductor Nd2−xCexCuO4±δ, from the half-filled Mott insulator to the Tc=24K superconductor. In Nd2CuO4, we reveal the charge-transfer band for the first time. As electrons are doped into the system, this feature’s intensity decreases with the concomitant formation of near- EF spectral weight. At low doping, the Fermi surface is an electron-pocket (with volume ∼x) centered at (π,0). Further doping leads to the creation of a new holelike Fermi surface (volume ∼1+x) centered at (π,π). These findings shed light on the Mott gap, its doping evolution, as well as the anomalous transport properties of the n-type cuprates.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd2-xCexCuO4±δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure not reported | unknown |
Similar papers
Electronic excitations in electron-doped cuprate superconductors
similarity 0.95P. Unger & P. Fulde
Source status unknown — claims are unverified
Commensurate Spin Dynamics in the Superconducting State of an Electron-Doped Cuprate Superconductor
similarity 0.94K. Yamada et al.
Source status unknown — claims are unverified
Effect of Ce doping on the Cu charge in the electron superconductor Nd2−xCexCuO4
similarity 0.94E. E. Alp et al.
Source status unknown — claims are unverified
Coupling between dynamic magnetic and charge-order correlations in the cuprate superconductor Nd2−xCexCuO4
similarity 0.94E. H. da Silva Neto et al.
Source status unknown — claims are unverified
Crossover from inelastic magnetic scattering of Cooper pairs to spin-wave dispersion produces the low-energy kink structure in the spectra of cuprate superconductors
similarity 0.94Tanmoy Das et al.
Source status unknown — claims are unverified
Effect of a magnetic field on the long-range magnetic order in insulating Nd2CuO4 and nonsuperconducting and superconducting Nd1.85Ce0.15CuO4
similarity 0.94M. Matsuura et al.
Source status unknown — claims are unverified