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Title: Chirality density wave of the "hidden order" phase in URu2Si2

Journal Article · · Science

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 Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF)
Grant/Contract Number:
89233218CNA000001; SC0005463; DMR-1104884; DMR-0844115
OSTI ID:
1680010
Report Number(s):
LA-UR-15-27086
Journal Information:
Science, Vol. 347, Issue 6228; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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Theory perspective: SCES 2016 journal September 2016
Chiral superconductors journal April 2016
Theory of scanning tunneling spectroscopy: from Kondo impurities to heavy fermion materials journal November 2016
Octupolar versus Néel Order in Cubic 5 d 2 Double Perovskites journal February 2020
Raman spectroscopy of f -electron metals: An example of CeB 6 journal June 2019
Orbital-selective Kondo lattice and enigmatic f electrons emerging from inside the antiferromagnetic phase of a heavy fermion journal October 2019
Persistent coherence of quantum superpositions in an optimally doped cuprate revealed by 2D spectroscopy journal February 2020
Single Crystal Growth of URu2Si2 by the Modified Bridgman Technique journal October 2016
Pressure-induced rotational symmetry breaking in URu2Si2 text January 2018
Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors text January 2015
Persistent coherence of quantum superpositions in an optimally doped cuprate revealed by 2D spectroscopy text January 2017
Collective Modes in Excitonic Magnets: Dynamical Mean-Field Study text January 2018
Orbital-selective Kondo-lattice and enigmatic f-electrons emerging from inside the antiferromagnetic phase of a heavy fermion text January 2019
Octupolar order in d-orbital Mott insulators text January 2019

Figures / Tables (5)


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