Hi Everyone! I've recently ran a few of my first fermi surface calculations for the crystal La(SiIr)2, but in order to compare it to experimental data (landau oscillations of the physical crystal), I need to find regions where dS/dn is zero, where n is the k-space vector of the magnetic field and S is the area of loop that is perpendicular to the vector n. I wanted to ask if there was a program in xcrysden or in quantum espresso that could help me find these loops for an arbitrary n. For example, if I had a cylinder for a fermi surface that was aligned along the z-axis, and my vector n was parallel to the z-axis, then I would have infinitely many loops perpendicular to n where dS/dn=0.
Thank you! Stephen -- *University of California, Berkeley* *Department of Letter and Sciences*
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