کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1865957 | 1037901 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of electric-field on spin transport and spin current in an organic semiconductor system Effect of electric-field on spin transport and spin current in an organic semiconductor system](/preview/png/1865957.png)
We use the two-component drift-diffusion model to study the spin density polarization in an organic semiconductor system under an external electric-field. The spin-dependent electrical-conductivity, the drift spin current and the diffusion spin current in the organic semiconductor are self-consistently derived. It is found that the spin current could be strongly influenced by the spin-dependent electrical-conductivity. When the spin-dependent conductivity varies from 0 to 0.5%, the spin current presents a very pronounced change almost three orders in magnitude. The electric-field could effectively enhance the spin-dependent electrical-conductivity and the spin current. Furthermore, the spin-dependent electrical-conductivity is position sensitive, but its position sensitivity goes down while electric-field is larger than about 1 mV/μm.
Journal: Physics Letters A - Volume 372, Issue 42, 13 October 2008, Pages 6434–6437