Hidden Order in URu2Si2 Unveiled

作者：Ressouche E^*; Ballou R; Bourdarot F; Aoki D; Simonet V; Fernandez Diaz M T; Stunault A; Flouquet J

来源：Physical Review Letters, 2012, 109(6): 067202.

DOI：10.1103/PhysRevLett.109.067202

We report on measurements, by polarized neutron elastic scattering, of the magnetization distribution induced in a single crystal of URu2Si2 under a magnetic field applied along the tetragonal c axis. A subtle change in this distribution, revealed by maximum entropy analysis of the data, is found when the temperature is decreased to the range of the hidden order. An analysis in terms of U4+ ionic states reveals that this change is a fingerprint of a freezing of rank 5 multipoles, i.e., dotriacontapoles.

• 出版日期2012-8-7
• 单位中国地震局