<div dir="ltr"><div>Dear All,</div><div><br></div><div>I used Quantum Espresso 6.5 code to interface with WANNIER90 3.0 code and there was a .spn file generated. The band structure from WANNIER90 3.0 code fits well with that from Quantum Espresso 6.5 code.</div><div><br></div><div>Then, I extracted the Hamiltonian from wannier90_hr.dat file and diagonalized this Hamiltonian to obtain the eigen vector. With this eigen vector, I computed the expectation value of the spin operator for the chosen band; however, I find that the spin texture from this extracted Hamiltonian does not fit that from Quantum Espresso 6.5 code</div><div><br></div><div>Here is the content of the wannier90.win file.</div><div><br></div><div>num_wann = 60<br>num_bands = 96<br>num_iter = 2000<br>guiding_centres = .true.<br>dis_num_iter = 5000<br>dis_froz_min = -1.7452<br>dis_froz_max = 4.2548</div><div>dis_win_min = -94.9452<br>dis_win_max = 15.1548<br>exclude_bands : 1-24<br>slwf_constrain = true<br>slwf_lambda = 3<br>spinors = .true.<br>write_hr = true<br>write_tb = true</div><div><br></div><div>begin projections<br>Co : px; py; pz; dz2; dxz; dyz; dxy; dx2-y2[0,0,1]<br>C : px; py; pz<br>end projections<br><br>begin unit_cell_cart<br> 2.5069999695 0.0000000000 0.0000000000<br> -1.2534999847 2.1711256609 0.0000000000<br> 0.0000000000 0.0000000000 32.0190010071<br>end unit_cell_cart<br><br>begin atoms_cart<br>Co 0.666666667 0.333333333 0.4367558283619166<br>Co 0.333333333 0.666666667 0.3771358283619166<br>Co 0.666666667 0.333333333 0.3175958243619166<br>C 0.666666667 0.333333333 0.2551329136809583<br>C 0.000000000 0.000000000 0.2551329136809583<br>end atoms_cart<br><br>bands_plot = .true.<br>bands_num_points = 100<br>begin kpoint_path<br>K6 -0.3333333333 0.6666666667 0.0000000000 K1 0.3333333333 0.3333333333 0.0000000000<br>K1 0.3333333333 0.3333333333 0.0000000000 K2 0.6666666667 -0.3333333333 0.0000000000<br>end kpoint_path<br>bands_plot_format = gnuplot xmgrace<br><br>mp_grid = 51 51 1<br><br>begin kpoints<br> 0.00000000 0.00000000 0.00000000 <br> 0.00000000 0.01960784 0.00000000 <br> 0.00000000 0.03921569 0.00000000</div><div>............</div><div><br></div><div>Would anyone please give me any suggestion on the origin of this problem?</div><div><br></div><div>Thank you very much in advance.</div><div><br></div><div>Kind regards,</div><div><br></div><div>Kenan Song<br></div></div>
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