Abstract
We have measured the dc magnetization of three high-quality single crystals of UPt3with a SQUID magnetometer down to ≈5 mK in magnetic fields below 2 mT. With B虀 in the ĉ direction we find a double superconducting transition, while for B虀||â we observe only one. At lower temperatures the temperature dependence of the magnetization follows power laws indicating unconventional behavior for the penetration depth. Below 20 mK a steep diamagnetic drop occurs, coinciding with the specific heat anomaly which we found earlier at 18 mK, pointing to static antiferromagnetic order.
Original language | English (US) |
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Pages (from-to) | 2378-2381 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 82 |
Issue number | 11 |
DOIs | |
State | Published - 1999 |
ASJC Scopus subject areas
- General Physics and Astronomy