Abstract
DC magnetization measurements on (formula presented) reveal a first-order phase transition at (formula presented) for both (formula presented) and c axes in the isothermal magnetization (formula presented) below 0.7 K, indicating a strong Pauli paramagnetic suppression in the even-parity pairing. (formula presented) in the normal state above (formula presented) exhibits non-Fermi-liquid behavior down to 150 mK, implying the existence of antiferromagnetic fluctuations behind the unconventional superconductivity. We observed an unusual peak effect for (formula presented) in fields 5-30 kOe below (formula presented) whose anomalous temperature dependence cannot be simply explained by ordinary mechanisms.
| Original language | English |
|---|---|
| Pages (from-to) | 1-4 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 65 |
| Issue number | 18 |
| DOIs | |
| State | Published - 2002 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics