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Abstract
The temperature dependence of magneto current in the spin spin valve transistor system
is theoretically explored based on phenomenological model.
We find that the collector current strongly depends on the relative orientation of
magnetic moment of ferromagnetic metals due to spin mixing effect. For example, the
collector current is decreasing in the parallel case with increasing temperature,
and it is increasing in anti-parallel configuration. We then obtain decreasing magneto
current with increasing temperature. The result accords with the experimental data
in qualitative manner. This phenomenological model calculations suggest that spin
mixing effect may play an important role in the spin valve transistor system at finite
temperature.