A. Krol, C.J. Sher, et al.
Surface Science
The entire temperature dependence of the upper critical field Hc2 in the β -pyrochlore K Os2 O6 is obtained from high-field resistivity and magnetic measurements. Both techniques identically give Hc2 (T 0 K) not only surprisingly high (∼33 T), but also the approach to it is unusually temperature linear all the way below Tc (=9.6 K). We show that, while Hc2 (0) exceeds a simple spin-singlet paramagnetic limit HP, it is well below an HP enhanced due to the missing spatial inversion symmetry reported recently in K Os2 O6, ensuring that the pair breaking here is executed by orbital degrees. Ab initio calculations of orbital Hc2 show that an unusual temperature dependence is reproduced if dominant s -wave superconductivity resides on the smaller closed Fermi surfaces. © 2006 The American Physical Society.
A. Krol, C.J. Sher, et al.
Surface Science
Ronald Troutman
Synthetic Metals
Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997
Zelek S. Herman, Robert F. Kirchner, et al.
Inorganic Chemistry