Temperature dependence of energy gap in the superconducting state in URu2Si2

Frederic Bourdarot, Elena Hassinger, Stephane Raymond, Dai Aoki, Valentin Taufour, Jacques Flouquet

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11 Citations (Scopus)


The excitation spectrum of URu2Si2 in the superconducting state has been investigated by a precise neutron-scattering experiment. A weak but clear positive energy shift of ∼40 μeV has been detected in the superconducting phase (at T = 400 mK) for the resonance at Q0 = (1,0,0). For the resonance at Q1 = (0.6,0,0), a two times smaller shift is observed but with an incertitude of the same order than this shift. This result is in agreement with our previous results indicating that the wave-vector Q0 is connected with the order parameters of the hidden order and of superconductivity.

Original languageEnglish
Article number094706
JournalJournal of the Physical Society of Japan
Issue number9
Publication statusPublished - 2010 Sept


  • Hidden order
  • Magnetic resonance
  • Superconductivity
  • URuSi


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