Considering spin in the transport of nanoscale devices

  • Thread starter simsCity
  • Start date
  • #1
7
0

Main Question or Discussion Point

Hi,

The transmission of nano devices are generally done without cosidering the spin polarization. However, as I saw in some papers, the effect of spin is sometimes included. How can I decide to use spin or not when simulationg transmission of nanoscale devices?

Thanks in advance...
 

Answers and Replies

  • #2
898
67
It takes quite some effort to produce spin polarization in nano devices. Spins get scattered and eventually average out to a 50%/50% non-magnetic population. The length scale (spin diffusion length) for this depends on the material and heavy atom impurities, but in general it is quite short.

So unless you make an effort to spin-polarize your device, e.g. by direct contact with a ferromagnetic layer or irradiation with circular polarized light you can probably neglect spin effects.

http://en.wikipedia.org/wiki/Spintronics
 
  • #3
7
0
Thanks a lot.
 

Related Threads on Considering spin in the transport of nanoscale devices

Replies
3
Views
5K
Replies
1
Views
3K
  • Last Post
Replies
2
Views
2K
Replies
1
Views
2K
Replies
9
Views
1K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
5
Views
2K
Replies
0
Views
2K
Replies
0
Views
2K
Top