# Spin transport in Chromium wire¶

To study spin-resolved transport is sufficient to activate the “unrestricted” option in the Band Main panel:

Start up AMSinput
1. Switch to BAND:
2. Tick the Unrestricted check-box
4. Click on to go to the NEGF panel (or click on Model → NEGF)

Click here to download the lead file Cr_lead.xyz

and create a 1D chromium chain:

In the NEGF panel
Click on the folder icon next to Lead: this will prompt a file dialog window
Fill the central region with 9 layers of lead material

Your system should now look like this:

We run the calculation and visualize the results with AMSspectra:

Click on File → Save
Run the calculation with File → Run
Wait for the calculation to finish
Click on SCM → Spectra…