Physics – Condensed Matter – Superconductivity
Scientific paper
2003-06-03
Physics
Condensed Matter
Superconductivity
4 pages, 4 figures and 1 table
Scientific paper
10.1103/PhysRevLett.91.217001
Poly- and single-crystalline Na$_x$CoO$_2$ has been successfully intercalated with H$_2$O and D$_2$O as confirmed by X-ray diffraction and thermogravimetric analysis. Resistivity, magnetic susceptibility, and specific heat measurements show bulk superconductivity with T$_c$ close to 5 K in both cases. The substitution of deuterium for hydrogen has an effect on T$_c$ of less than 0.2 K. Investigation of the resistivity anisotropy of Na$_x$CoO$_2\cdot$yH$_2$O single crystals shows: (a) almost zero resistivity below T$_c$, and (b) an abrupt upturn at $T^* \sim$ 52 K in both the $\it {ab}$ plane and the $\it {c}$ direction. The implications of our results on the possible superconducting mechanism will be discussed.
Jin Rongying
Khalifah Peter
Mandrus David
Sales Brian C.
No associations
LandOfFree
Observation of Bulk Superconductivity in NaxCoO2.yH2O and NaxCoO2.yD2O Powder and Single Crystals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observation of Bulk Superconductivity in NaxCoO2.yH2O and NaxCoO2.yD2O Powder and Single Crystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of Bulk Superconductivity in NaxCoO2.yH2O and NaxCoO2.yD2O Powder and Single Crystals will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-78702