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Resonant magnetic x-ray scattering study of phase transitions in UPd[sub 2]Al[sub 3]

Journal Article · · Physical Review Letters; (United States)
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  1. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1 (Canada) Physics Department, Brookhaven, National Laboratory, Upton, New York 11973 (United States) AT T Bell Laboratories, Murray Hill, New Jersey 07973 (United States) Laboratoire Louis-Neel, Centre Nationale de la Recherche Scientifique, Grenoble (France) Oak Ridge Institute for Science and Education, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Resonant magnetic x-ray scattering measurements were performed on a single microcrystallite at the surface of a polycrystalline boule of the antiferromagnetic, heavy fermion superconductor UPd[sub 2]Al[sub 3]. These measurements show a strong anomaly in the order parameter at 11.8 K, below [ital T][sub [ital N]][similar to]14.5 K, indicating at least two antiferromagnetically ordered phases which share a common periodicity. Measurements performed at temperatures near and below [ital T][sub [ital c]]=2.0 K show the antiferromagnetic order parameter to be unaffected on passing into the superconducting phase, to [plus minus]2%.
DOE Contract Number:
AC02-76CH00016; AC05-84OR21400
OSTI ID:
7244256
Journal Information:
Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:6; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English