Setting up Parametric Eigenfrequency Sweep with Piecewise Functions

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Hi!

I'm trying to run an eigenfrequency study of a lattice (a GKMG sweep). To do this, I want to parametric sweep over the parameter e. To define the path that e follows, I created piecewise parameters kx and ky, which are defined as functions of e.

How can I define e such that the parametric sweep follows the path set out by kx and ky?

Thank you so much! I've been stuck on this for a while so I'd really appreciate any help.


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