Study of field-induced magnetic structures in the 2% Rh-doped URu2Si2 in pulsed fields up to 40 T
Recent high-field neutron experiments in pulsed and static fields on the pure and 4% and 8 % Rh-doped URu2Si2 revealed that the first field-induced state (phase II) in the pristine system has propagation vector q1 = (0.6 0 0) in contrast to Rh-doped systems wuth propagation vector q2 = (2/3 0 0). Immediate question arises whether the change in q is connected with the disappearance of the so-called hidden order (HO) in the latter systems. With this proposal we suggest to determine the magnetic structures of the high field phases of 2% Rh-doped URu2Si2, which exhibits a re-entrant behavior of the HO. For this concentration, depending on temperature, either an AF state (with q0 = (1 0 0)) or the HO-rich state exists. This feature offers a possibility to test whether the appearance of the q0 phase in high fields above ~32 T is indeed linked to existence of the HO state at lower fields. The determination of other field-induced phases (the phase III, between 35.5 T and 37 T and the field-polarized state above 37 T) around the quantum critical point suggested at ~35 T should help to solve the mystery regarding the nature of HO in URu2Si2 and its relation to magnetism in this material.
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PROKES Karel; AOKI Dai; BOURDAROT Frederic; DUC Fabienne; FLOUQUET Jacques; FRINGS Paul; KNAFO William; KUWAHARA Keitaro; NOJIRI Hiroyuki and REGNAULT Louis Pierre. (2018). Study of field-induced magnetic structures in the 2% Rh-doped URu2Si2 in pulsed fields up to 40 T. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-41-954
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