Nesting, Spin Fluctuations, and Odd-Gap Superconductivity in NaxCoO2·yH2O
M. D. Johannes, I. I. Mazin, D. J. Singh, D. A. Papaconstantopoulos
DOI 10.1103/PhysRevLett.93.097005 · 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 calculated the one-electron susceptibility of hydrated NaxCoO2 and find strong nesting, involving about 70% of all electrons at the Fermi level and nearly commensurate with a 2×2 superstructure. This nesting creates a tendency to a charge density wave compatible with the charge order often seen at x≈0.5 and usually ascribed to electrostatic repulsion of Na ions. In the spin channel, it leads to strong spin fluctuations, which should be important for superconductivity. The state most compatible with this nesting structure is an odd-gap triplet s-wave state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Na1/3CoO2·1.4H2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Majorana Fermions in Spin-Singlet Nodal Superconductors with Coexisting Noncollinear Magnetic Order
similarity 0.93Yuan-Ming Lu & Ziqiang Wang
Source status unknown — claims are unverified
Topological Chiral and Nematic Superconductivity by Doping Mott Insulators on Triangular Lattice
similarity 0.93Yixuan Huang & D. N. Sheng
Source status unknown — claims are unverified
Nesting, spin-fluctuations, and odd-gap superconductivity in NaxCoO2 yH2O
similarity 0.93M. D. Johannes et al. · 2004 · arXiv:cond-mat/0403135
Source status unknown — claims are unverified
Superconductivity, charge ordering, and structural properties of α- and β−NaxCoO2∙y(H2O,D2O)
similarity 0.90Y. G. Shi et al.
Source status unknown — claims are unverified
Origin of strong correlations and superconductivity in NaxCoO2
similarity 0.90Giniyat Khaliullin & Jiří Chaloupka
Source status unknown — claims are unverified
Crystal structure of the sodium cobaltate deuterate superconductor NaxCoO2⋅4xD2O (x≈13)
similarity 0.89J. D. Jorgensen et al.
Source status unknown — claims are unverified