How to start and stop excitation pulse in the simulation?

[Naintara]

Hello Mumax3 community,

I want to apply a sine pulse in my simulation starting at 500 ps and keep it active until 1 ns. After that, I would like to excite the system again with another pulse.

Could someone please guide me on how to properly define the start and end time of a pulse in Mumax3? Which command or approach should I use for this?

Thank you in advance for your help!

[Josh Lauzier]

Hi,

The easiest way to do this is to just do multiple run statements. You can even do them in a loop for multiple pulses. Something like

for i:=0; i<=imax; i+=1{ 
run(0.5e-9)
B_ext=uniform(sin(2*pi*omega(t-t0)),0,0)
run(0.5e-9)
 }
where omega and t0 would be defined based on what frequency you want and where you want the sin to be centered. For a sin specifically, you'll want to be careful on where you cut off the signal.

For the above, the sin will be applied started at 500ps (=0.5ns), lasting for 0.ns, or until t=1ns. It then repeats.

Best,
Josh L.

[Naintara .]

Thank you so much! This approach worked perfectly for my simulation. I really appreciate your help.

Warm Regards,
Naintara   

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