Field-induced spin-density wave beyond hidden order in URu2Si2
Abstract
URu2Si2 is one of the most enigmatic strongly-correlated-electron systems and offers a fertile testing ground for new concepts in condensed matter science. In spite of >30 years of intense research, no consensus on the order parameter of its low-temperature hidden-order phase exists. A strong magnetic field transforms the hidden order into magnetically-ordered phases, whose order parameter has also been defying experimental observation. Here, thanks to an instrumentation breakthrough in high-field neutron scattering, we identify the field-induced phases of URu2Si2 as a spin-density-wave state with wavevector k1 = (0.6 0 0). The transition to the spin-density wave represents a unique touchstone for understanding the hidden-order phase. An intimate relationship between this magnetic structure, the magnetic fluctuations, and the Fermi surface is emphasized, calling for dedicated band structure calculations.
Keywords
Cite
@article{arxiv.1611.01321,
title = {Field-induced spin-density wave beyond hidden order in URu2Si2},
author = {W. Knafo and F. Duc and F. Bourdarot and K. Kuwahara and H. Nojiri and D. Aoki and J. Billette and P. Frings and X. Tonon and E. Lelièvre-Berna and J. Flouquet and L. -P. Regnault},
journal= {arXiv preprint arXiv:1611.01321},
year = {2016}
}
Comments
22 pages, 4 Figures + supplementary information (3 pages, 1 table)