Dimensional crossover and anomalous magnetoresistivity of superconducting NaxCoO2 single crystals
C. H. Wang, X. H. Chen, J. L. Luo, G. T. Liu, X. X. Lu, H. T. Zhang, G. Y. Wang, X. G. Luo, N. L. Wang
DOI 10.1103/PhysRevB.71.224515 · 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
In-plane (ρab) and c-axis (ρc) resistivities and magnetoresistivity of NaxCoO2 with x=0.7, 0.5, and 0.3 and superconducting Na0.3CoO2∙1.3H2O single crystals were studied. A dimensional crossover from 2 to 3 occurs with decreasing Na concentration from 0.7 to 0.3. A striking feature is that intercalation of water leads to a reentrance of two dimensions (2D) in superconducting crystal. It suggests that the 2D plays an important role in superconductivity as the case of cuprates. The anisotropic magnetoresistivity with a d-wave-like symmetry at 2K gives evidence for the existence of a special spin ordering like the stripes below 20K in Na0.5CoO2.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Na0.35CoO2*1.3H2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | Pressure not reported | unknown |
| Na0.3CoO2*1.3H2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | Pressure not reported | onset |
Similar papers
Revised Superconducting Phase Diagram of Hole-Doped Nax(H3O)zCoO2·yH2O
similarity 0.93C. J. Milne et al.
Source status unknown — claims are unverified
Dimensional crossover and anomalous magnetoresistivity in single crystals
similarity 0.91C. H. Wang et al. · 2004 · arXiv:cond-mat/0411050
Source status unknown — claims are unverified
Superconductivity in NdFe1−xCoxAsO (0.05<x<0.20) and rare-earth magnetic ordering in NdCoAsO
similarity 0.91Andrea Marcinkova et al.
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
Observation of Bulk Superconductivity in NaxCoO2·yH2O and NaxCoO2·yD2O Powder and Single Crystals
similarity 0.89R. Jin et al.
Source status unknown — claims are unverified
The role of the water molecules in novel superconductor, NaCoO1.3HO
similarity 0.88H. Sakurai et al. · 2003 · arXiv:cond-mat/0310717
Source status unknown — claims are unverified