Journal of Low Temperature Physics

, Volume 73, Issue 5–6, pp 469–481 | Cite as

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

  • Masasi Inoue
  • Motoharu Marushita
  • Hiroshi Negishi
  • Mikio Koyano
Article
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Revised:

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 resistancesRd(0). Electron-magnon scatterings are responsible for the appearance of the minimum at a bias voltageVB(min), which depends onRd(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 andRd(0)-dependent Lorenz number.

Keywords

Spectroscopy Magnetic Material Point Contact Restricted Range Layered Crystal 
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Copyright information

© Plenum Publishing Corporation 1988

Authors and Affiliations

  • Masasi Inoue
    • 1
  • Motoharu Marushita
    • 1
  • Hiroshi Negishi
    • 1
  • Mikio Koyano
    • 1
  1. 1.Department of Materials Science, Faculty of ScienceHiroshima UniversityHiroshimaJapan

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