sim:program=electrical-pulse

[Vinod Naik Bhukya]

Hi all,

I kindly request the community to throw some light on the usage of electrical-pulse. I understand that we need to use the following commands

sim:program=electrical-pulse

sim:electrical-pulse-time= 0.5 ns

sim:electrical-pulse-rise-time= 0.05 ns

sim:electrical-pulse-fall-time=0.05 ns

Are these commands specific to a particular module or can we use these to any module?

[Vinod Naik Bhukya]

sim:temperature=300
sim:equilibration-temperature=300
sim:time-step=1.0e-16
sim:time-steps-increment=1
sim:loop-time-steps=1
sim:equilibration-time-steps=100000
sim:total-time-steps=1000000

sim:electrical-pulse-time= 0.05 ns
sim:electrical-pulse-rise-time=0 ns
sim:electrical-pulse-fall-time=0 ns
sim:program=electrical-pulse
sim:integrator=llg-heun

output:real-time

output:fractional-electric-field-strength

Here I am running the simulation for 0.1 ns and with electrical pulse time to be 0.05 ns. But when i plotted time vs electric field strength, the pulse is not going to zero at 0.05 ns, it is ON till the end of the simulation. 

Vinod Naik Bhukya 在 2026年4月17日 星期五下午5:06:58 [UTC+8] 的信中寫道：

[gabo...@gmail.com]

I checked out the develop branch and gave it a try.  I see the falling edge when I plot it:

username@computername:~$ git clone https://github.com/richard-evans/vampire.git
...
username@computername:~/vampire$ git checkout develop
username@computername:~/vampire$ make
...
username@computername:~/vampire$ cd ../test
username@computername:~/test$ ls -ls
total 12
4 -rw-r--r-- 1 username username  821 Apr 17 02:37 Co.mat
4 -rw-r--r-- 1 username username 1622 Apr 17 09:20 input
4 -rw-r--r-- 1 username username   73 Apr 17 09:11 plotPulse.gnu
username@computername:~/test$ vampire-serial
                                                _          
                                               (_)        
                    __   ____ _ _ __ ___  _ __  _ _ __ ___
                    \ \ / / _` | '_ ` _ \| '_ \| | '__/ _ \
                     \ V / (_| | | | | | | |_) | | | |  __/
                      \_/ \__,_|_| |_| |_| .__/|_|_|  \___|
                                         | |              
                                         |_|              

                      Version 7.0.0 Apr 17 2026 10:41:02

             Git commit: c3e38ec6134e8bb9342f1b2c4cd8406a7820ad49
...
Simulation ended gracefully.
username@computername:~/test$ gnuplot --persist plotPulse.gnu

Kind Regards,

Gavin

VAMPIRE user

[Vinod Naik Bhukya]

sorry my mistake to not write ns properly in my code. Thank you.

gabo...@gmail.com 在 2026年4月18日 星期六凌晨1:01:23 [UTC+8] 的信中寫道：