Spin transport in Chromium wire
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BAND NEGF (Non-Equilibrium Green's Function) Metal wire Spin transport
Transmission function Current

See also: DFTB-NEGF manual and BAND-NEGF manual

To study spin-resolved transport, it is necessary to activate the
"unrestricted" option in the Band Main panel:

   Start up **AMSinput**
   **1.** Switch to **BAND**: [image: ADFPanel][image] **→** [image: BANDPanel][image]
   **2.** Tick the **Unrestricted** check-box
   **3.** Select **Task → NEGF**
 [image]

Now, download the lead file:

   Click "here" to download the lead file **Cr_lead.xyz**

and create a 1D chromium chain:

   Click on [image: MoreBtn][image] to go to the **NEGF** panel (or click on **Model → NEGF**)
   In the **NEGF panel**
   Click on the folder icon next to **Lead**: this will prompt a file dialog window
   Open **Cr_lead.xyz** (the .xyz file you just downloaded)
   Click on **Fill** and fill the central region with **9 layers** of lead material

Your system should now look like this:

[image]

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...**
 [image]
