X-ray resonant scattering study of the quadrupolar order in UPd3 |
| |
Authors: | McMorrow D F McEwen K A Steigenberger U Rønnow H M Yakhou F |
| |
Institution: | Materials Research Department, Ris? National Laboratory, DK-4000 Roskilde, Denmark. |
| |
Abstract: | Quadrupolar ordering in a 5f electron system has been observed directly for the first time, using x-ray scattering techniques. In UPd (3) at low temperatures satellite peaks appear at (1,0,l) (orthorhombic notation) with l odd and even. Both sets of peaks show a resonant enhancement of the scattering at the M(IV) edge of U. At resonance, the dominant scattering of the l odd peaks occurs in the unrotated polarization channel, whereas for l even a significant rotated component is found. These results are discussed in terms of possible structures of the antiferroquadrupolar phases. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|