Chirality density wave of the "hidden order" phase in URu2Si2
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Rutgers Univ., Piscataway, NJ (United States)
- Leiden Univ. (Netherlands). Kamerlingh Onnes Lab.
A second-order phase transition in a physical system is associated with the emergence of an “order parameter” and a spontaneous symmetry breaking. The heavy fermion superconductor URu2Si2 has a “hidden order” (HO) phase below the temperature of 17.5 kelvin; the symmetry of the associated order parameter has remained ambiguous. In this study, we use polarization-resolved Raman spectroscopy to specify the symmetry of the low-energy excitations above and below the HO transition. We determine that the HO parameter breaks local vertical and diagonal reflection symmetries at the uranium sites, resulting in crystal field states with distinct chiral properties, which order to a commensurate chirality density wave ground state.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Grant/Contract Number:
- 89233218CNA000001; SC0005463
- OSTI ID:
- 1680010
- Report Number(s):
- LA-UR--15-27086
- Journal Information:
- Science, Journal Name: Science Journal Issue: 6228 Vol. 347; ISSN 0036-8075
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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