1985 年 26 巻 12 号 p. 851-854
The electrical resistivity has been measured on Co–Ni and Co–Cr dilute alloy specimens in the temperature range from 4.2 to 360 K. The deviations from Matthiessen’s rule (DMR) derived from the resistivity data have been analysed in terms of the two current model. It is confirmed that a spin mixing term proportional to T2 is the dominant mechanism of DMR at low temperatures. The large value of the residual resistivity in the spin down subband of the Co–Cr alloy is associated with the virtual bound state of spin down electrons of chromium lying close to the Fermi level of the spin down subband of cobalt.
