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Creators/Authors contains: "Janoschek, Marc"

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  1. ; ; ; ; ; ; ; ; ; ; et al (, npj Quantum Materials)
    Abstract The detailed anisotropic dispersion of the low-temperature, low-energy magnetic excitations of the candidate spin-triplet superconductor UTe2is revealed using inelastic neutron scattering. The magnetic excitations emerge from the Brillouin zone boundary at the high symmetryYandTpoints and disperse along the crystallographic$$\hat{b}$$ b ̂ -axis. In applied magnetic fields to at leastμ0H= 11 T along the$$\hat{c}-{\rm{axis}}$$ c ̂ − axis , the magnetism is found to be field-independent in the (hk0) plane. The scattering intensity is consistent with that expected from U3+/U4+ f-electron spins with preferential orientation along the crystallographic$$\hat{a}$$ a ̂ -axis, and a fluctuating magnetic moment ofμeff=1.7(5)μB. We propose interband spin excitons arising fromf-electron hybridization as a possible origin of the magnetic excitations in UTe2. 
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  2. ; ; ; ; ; ; ; ; (, Physical review research)
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