<div dir="ltr"><div>Hi Everyone!</div><div><br></div><div>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. <br></div><div><br></div><div>Thank you!</div><font color="#888888"><div>Stephen</div></font><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><i>University of California, Berkeley</i><div><i>Department of Letter and Sciences</i></div></div></div></div>