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Point-contact spectroscopy for itinerant-magnetic material of Fe x TiS2

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Abstract

The nonlinear current-voltage characteristics of a homojunction point contact of 1T-CdI2-type layered crystal TiS2 and its intercalation compound of itinerantmagnetic Fe x TiS2 have been measured at 1.4 K. For the magnetic samples, both a maximum and a minimum in thedI/dV-V curves are observed within a restricted range of the initial differential resistancesR d(0). Electron-magnon scatterings are responsible for the appearance of the minimum at a bias voltageV B(min), which depends onR d(0). These results are discussed using the conventional “spherical spreading out” model, together with a heating model. The agreement between experiment and theory is apparently good if a large background is taken into account, but with unusually large andR d(0)-dependent Lorenz number.

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Authors and Affiliations

  1. Department of Materials Science, Faculty of Science, Hiroshima University, Hiroshima, Japan

    Masasi Inoue, Motoharu Marushita, Hiroshi Negishi & Mikio Koyano

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  1. Masasi Inoue
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  2. Motoharu Marushita
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  3. Hiroshi Negishi
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  4. Mikio Koyano
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Inoue, M., Marushita, M., Negishi, H. et al. Point-contact spectroscopy for itinerant-magnetic material of Fe x TiS2 . J Low Temp Phys 73, 469–481 (1988). https://doi.org/10.1007/BF00683574

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  • DOI: https://doi.org/10.1007/BF00683574

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