Field-induced spin-density wave beyond hidden order in URu2Si2
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 mag...
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| creator | Knafo, W Duc, F Bourdarot, F Kuwahara, K Nojiri, H Aoki, D Billette, J Frings, P Tonon, X Lelièvre-Berna, E Flouquet, J L -P Regnault |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.1611.01321 |
| format | Article |
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| subjects | Condensed matter physics Fermi surfaces Magnetic structure Magnetic variations Neutron scattering Order parameters Physics - Strongly Correlated Electrons Spin density waves |
| title | Field-induced spin-density wave beyond hidden order in URu2Si2 |
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