Physics – Condensed Matter – Superconductivity
Scientific paper
2007-01-08
Phys. Rev. B 75, 012503 (2007)
Physics
Condensed Matter
Superconductivity
4 pages, 1 figures
Scientific paper
The origin for the upward curvature of the upper critical field ($H_{c2}$) observed in hydrate cobaltate Na$_{0.35}$CoO$_{2} \cdot y$H$_{2}$O is investigated based on the microscopic gap equation. It is shown that the observed upward curvature results from the transition between two different pairing symmetries that occur on different energy bands. Furthermore, different pairing symmetries involved in the transition results in different upward curvatures. By considering transitions among all lowest possible pairing symmetries, it is found that the transition of the pairing symmetry from s-wave at low fields to $d_{x^2-y^2}+ id_{xy}$ at high fields is the best fit to the experimental data. Our results provide an important clue to the understanding of the superconductivity in hydrate cobaltate.
Kao Jun-Ting
Lin Jiunn-Yuan
Mou Chung-Yu
No associations
LandOfFree
Pairing Symmetry and Upward Curvature of Upper Critical Field in Superconducting $Na_{0.35} Co O_2 \cdot y H_2 O$ 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 Pairing Symmetry and Upward Curvature of Upper Critical Field in Superconducting $Na_{0.35} Co O_2 \cdot y H_2 O$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pairing Symmetry and Upward Curvature of Upper Critical Field in Superconducting $Na_{0.35} Co O_2 \cdot y H_2 O$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-721610