Quasiparticle Excitation in the Superconducting Pyrochlore Cd2Re2O7 Probed by Muon Spin Rotation.

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  • Kadono Ryosuke
    Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801
  • Higemoto Wataru
    Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801
  • Koda Akihiro
    Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801
  • Kawasaki Yu
    Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531
  • Hanawa Masashi
    Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581
  • Hiroi Zenji
    Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581

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  • Quasiparticle Excitation in the Superconducting Pyrochlore Cd<sub>2</sub>Re<sub>2</sub>O<sub>7</sub>Probed by Muon Spin Rotation

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The quasiparticle excitations in the mixed state of Cd2Re2O7 have been studied by means of muon spin rotation/relaxation (μSR). The temperature dependence of the magnetic penetration depth (λ) is consistent with a nearly isotropic superconducting order parameter, although a slight discrepancy which is dependent on the details in the analysis may be present. This is also supported by the relatively weak field dependence of λ.

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