- Author
-
M. Sundermann
M.W. Haverkort
S. Agrestini
A. Al-Zein
M. Moretti Sala
Y. Huang
M. Golden
A. de Visser
P. Thalmeier
L.H. Tjeng
A. Severing - Date
- 6-12-2016
- Title
- Direct bulk-sensitive probe of 5f symmetry in URu2Si2
- Journal
- Proceedings of the National Academy of Sciences of the United States of America
- Volume | Issue number
- 113 | 49
- Pages (from-to)
- 13989-13994
- Number of pages
- 6
- Document type
- Article
- Faculty
- Faculty of Science (FNWI)
- Institute
- Van der Waals-Zeeman Institute (WZI)
Institute of Physics (IoP) - Abstract
-
The second-order phase transition into a hidden order phase in URu2Si2 goes along with an order parameter that is still a mystery, despite 30 years of research. However, it is understood that the symmetry of the order parameter must be related to the symmetry of the low-lying local electronic f-states. Here, we present results of a spectroscopic technique, namely core-level nonresonant inelastic X-ray scattering (NIXS). This method allows for the measurement of local high-multipole excitations and is bulk-sensitive. The observed anisotropy of the scattering function unambiguously shows that the 5f ground-state wave function is composed mainly of the Γ1 with majority Jz = |4⟩ + |−4⟩ and/or Γ2 singlet states. The incomplete dichroism indicates the possibility that quantum states of other irreducible representation are mixed into the ground state.
- URL
- go to publisher's site
- Other links
- Other link
- Language
- English
- Persistent Identifier
- https://hdl.handle.net/11245.1/3c5f0804-1246-4a2f-979f-de704be77445
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