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Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2021

From hidden order to antiferromagnetism: Electronic structure changes in Fe-doped URu 2 Si 2

Ji Dai
Cédric Bareille
Kevin Huang
Christian Wolowiec

Résumé

Significance The transition of U R u 2 S i 2 to an ordered state below 17.5 K has been a puzzle of condensed matter physics for over 30 y, earning it the soubriquet of the hidden-order (HO) state. Intriguingly, pressure or doping can transform the HO into an antiferromagnetic (AFM) state, of well-known symmetry. Here, by angle-resolved photoemission spectroscopy, the electronic structure of U R u 2 S i 2 in the HO phase is directly compared with its AFM counterpart. This reveals topographically identical Fermi surfaces; however, they differ by the size of some of their pockets. The overall nonrigid change of the electronic structure across the AFM/HO phase boundary indicates that a change in the interaction strength between states near the Fermi level is essential to stabilize the HO state.

Dates et versions

hal-04457993 , version 1 (14-02-2024)

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Citer

Emmanouil Frantzeskakis, Ji Dai, Cédric Bareille, Tobias Rödel, Monika Güttler, et al.. From hidden order to antiferromagnetism: Electronic structure changes in Fe-doped URu 2 Si 2. Proceedings of the National Academy of Sciences of the United States of America, 2021, 118 (27), pp.e20207501. ⟨10.1073/pnas.2020750118⟩. ⟨hal-04457993⟩
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