<meta http-equiv="Content-Type" content="text/html; charset=GB18030"><pre>Dear developer and Wannier90 community,</pre><pre>I am using postw90.x(wannier90 version 2.1.0) to calculate the complex optical conductivity. When I use 0.1 eV fixed smear by setting [kubo_adpt_smr = false] and [kubo_smr_fixed_en_width = 0.1], Regardless of the type of smear used£¬The imaginary part of the diagonal element of the optical conductivity can be obtained normally, but the real part displays NaN; the real part of the non-diagonal element can be obtained normally, but the imaginary part displays NaN.</pre><pre>When I use [kubo_adpt_smr = true],All the real and imaginary parts can be obtained normally, but the literature that I repeated uses a fixed smear of 0.1 eV, and the results of the adaptive smear calculation are not correct with the literature.</pre><pre>How can I solve this situation? </pre><pre>Here are the wannier90.win file and two of the output files.</pre><pre>[wannier90.win]</pre><pre>num_bands = 176
exclude_bands = 1-80
num_wann = 156
dis_win_min = -5.818
dis_win_max = 3.682
dis_froz_min = -5.818
dis_froz_max = 3.382
dis_num_iter = 200
num_iter = 200
num_print_cycles = 10
spinors = .true.
guiding_centres = true
begin projections
Nb : d
I : p
end projections</pre><pre>fermi_energy = 0.682</pre><pre>berry = ture
berry_task = kubo
kubo_freq_max = 6
berry_kmesh = 301 301 1
kubo_adpt_smr = false
kubo_smr_fixed_en_width = 0.1
berry_curv_adpt_kmesh = 5
berry_curv_adpt_kmesh_thresh = 100.0
</pre><pre>......</pre><pre>[wannier90-kubo_S_xx.dat]</pre><pre> 0.00000000E+00 NaN -0.47332911E-14
0.10000000E-01 NaN -0.59389050E+01
0.20000000E-01 NaN -0.11879968E+02
0.30000000E-01 NaN -0.17825352E+02
0.40000000E-01 NaN -0.23777232E+02
0.50000000E-01 NaN -0.29737798E+02
0.60000000E-01 NaN -0.35709265E+02
0.70000000E-01 NaN -0.41693873E+02
0.80000000E-01 NaN -0.47693899E+02
0.90000000E-01 NaN -0.53711658E+02</pre><pre>.......</pre><pre>[wannier90-kubo_A_xy.dat]</pre><pre> 0.00000000E+00 -0.41968789E-01 NaN
0.10000000E-01 -0.41877977E-01 NaN
0.20000000E-01 -0.41605482E-01 NaN
0.30000000E-01 -0.41151120E-01 NaN
0.40000000E-01 -0.40514583E-01 NaN
0.50000000E-01 -0.39695433E-01 NaN
0.60000000E-01 -0.38693095E-01 NaN
0.70000000E-01 -0.37506843E-01 NaN
0.80000000E-01 -0.36135788E-01 NaN
0.90000000E-01 -0.34578853E-01 NaN
0.10000000E+00 -0.32834746E-01 NaN</pre><pre>......</pre><div>Thank you</div><div>Su Hang</div><div>University of Science and Technology of China</div>