Magnetic-octupole order in neptunium dioxide?
Magnetic-octupole order in neptunium dioxide?
复制标题
二氧化镎的磁性八极秩序?
DOI:
--
复制
发表时间:
2000
影响因子:
8.6
通讯作者:
G. Amoretti
中科院分区:
文献类型:
--
作者:
P. Santini;G. Amoretti
The phase transition occurring at 25 K in NpO2, discovered almost 50 years ago, is the most long-lasting mystery in the physics of actinide compounds. Theories based on magnetic or electric-quadrupole order lead inevitably to fundamental, qualitative inconsistencies with observations. We show that the phenomenology of NpO2 can be understood if the order parameter is assumed to be a magnetic octupole of gamma(2) ( xyz) symmetry. NpO2 is the first compound for which indications of an octupolar phase transition have been found.