Abstract
We have investigated the superconducting compounds (Formula presented) ((Formula presented) and Ru) ((Formula presented) and 32 K, respectively), as well as these materials charged with hydrogen, by several complementary experimental techniques. (Formula presented) is magnetically ordered at (Formula presented) thus (Formula presented) Superconductivity (SC) is confined to the (Formula presented) planes, and the magnetic ordering is due to the Ru sublattice. Among many interesting features, irreversibility phenomena at low magnetic fields and a magnetic spin reorientation transition, which are observed, originate from antisymmetric exchange coupling of the Dzyaloshinsky-Moria type. The effect of hydrogen (0.35 at. %) is to suppress SC in both compounds and to enhance the weak-ferromagnetic properties of the Ru sublattice (Formula presented) In contrast to other high-(Formula presented) materials, this effect is reversible: namely, by depletion of hydrogen, SC is restored in both materials and for (Formula presented) the (Formula presented) drops back to 122 K.
| Original language | English |
|---|---|
| Pages (from-to) | 550-556 |
| Number of pages | 7 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 57 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Jan 1998 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics