| Autor: |
Inoue, Masasi, Marushita, Motoharu, Negishi, Hiroshi, Koyano, Mikio |
| Zdroj: |
Journal of Low Temperature Physics; December 1988, Vol. 73 Issue: 5-6 p469-481, 13p |
| Abstrakt: |
The nonlinear current-voltage characteristics of a homojunction point contact of 1T-CdI2-type layered crystal TiS2 and its intercalation compound of itinerantmagnetic FexTiS2 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. |
| Databáze: |
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