Uranium ruthenium silicide

Uranium ruthenium silicide (URu2Si2) is a heavy fermion alloy composed of uranium, ruthenium, and silicon. URu2Si2 has the same '122' tetragonal crystal structure as many other compounds of present condensed matter research. URu2Si2 is a superconductor with a "hidden order" (HO) phase below a temperature of 17.5 K.[1][2] Below this temperature, it is magnetic, and below about 1.5 K it superconducts.[3] However, the nature of the ordered phase below 17.5K is still under debate despite a wide variety of scenarios that have been proposed to explain this phase.

References
  1. H.-H. Kung1, R. E. Baumbach, E. D. Bauer, V. K. Thorsmølle, W.-L. Zhang, K. Haule, J. A. Mydosh, G. Blumberg (20 March 2015). "Chirality density wave of the "hidden order" phase in URu2Si2". Science. 347 (6228): 1339–1342. arXiv:1410.6398. doi:10.1126/science.1259729. PMID 25678557.CS1 maint: uses authors parameter (link)
  2. Premala Chandra, Piers Coleman, Rebecca Flint (31 January 2013). "Hastatic order in the heavy-fermion compound URu2Si2". Nature. 493 (7434): 621–626. arXiv:1207.4828. doi:10.1038/nature11820. PMID 23364741.CS1 maint: uses authors parameter (link)
  3. Goll, Gernot (2006). Unconventional Superconductors: Experimental Investigation of the Order-Parameter Symmetry. Springer. pp. 107–111. ISBN 978-3540289852.
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