Subject: Skyrmion merging failure while performing OR gate using Y shaped geometry

[reshma davis]

Hi everyone, I am trying to simulate a Skyrmion OR gate using a Y-junction geometry. My goal is for two input skyrmions (State 1,1) to merge into a single output skyrmion.

However, instead of merging, one of the skyrmions is being annihilated at the junction or during the interaction, while the other proceeds. I have tried but it doesn't solve the annihilation issue. Could you please advise on how to achieve a stable merging process?  Is there a specific current density profile that helps skyrmions to merge to get the output?

I have attached the PNG of the Geometry and the code what I have used and the output for 1,1 operation. Kindly provide a solution for this issue.