[Pw_forum] switch the direction of electric field

[Q.J.Wang]

Dear all
I want to add a sawlike potential on the slab, however, I don't know how to add a inverse sawlike potential. Does it set the parameter 'eamp' negative or exchange the value of 'emaxpos' and 'eopreg'?
Thank you in advance for your suggestions and help on this problem.

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Best regards
 
Q.J.Wang
 
XiangTan University
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