Bi2O2Se Gamma Z bandstructure Wave-vector (Angstrom^-1) Frequency(cm^-1) 0.0000000 -0.357025 -0.357025 -0.199287 44.546383 44.546383 66.384956 66.384956 136.726379 161.701492 263.724487 263.724487 357.539764 427.488159 427.488159 489.055054 0.0016323 0.163469 0.207195 2.093011 44.554104 44.554279 66.396736 66.396843 136.705368 161.698471 263.735291 263.735321 357.530914 427.482971 427.483154 489.045227 0.0032647 0.705791 0.749847 4.197311 44.577110 44.577808 66.432053 66.432495 136.642654 161.689407 263.767609 263.767700 357.504395 427.467499 427.468170 489.016418 0.0048970 1.145772 1.206021 6.292658 44.614941 44.616486 66.490891 66.491882 136.539291 161.674301 263.821289 263.821503 357.460266 427.441711 427.443237 488.970581 0.0065293 1.584985 1.660649 8.378647 44.666847 44.669529 66.573212 66.574936 136.396957 161.653152 263.896088 263.896423 357.398682 427.405762 427.408356 488.910828 0.0081616 2.037317 2.126507 10.453095 44.731827 44.735882 66.678955 66.681572 136.217896 161.625992 263.991608 263.992126 357.319824 427.359680 427.363647 488.841370 0.0097940 2.508381 2.608793 12.513680 44.808643 44.814259 66.807999 66.811630 136.004807 161.592865 264.107422 264.108093 357.223938 427.303650 427.309143 488.767151 0.0114263 3.000848 3.110018 14.558194 44.895893 44.903179 66.960167 66.964905 135.760696 161.553909 264.242889 264.243774 357.111359 427.237854 427.244965 488.693726 0.0130586 3.515632 3.631089 16.584639 44.992039 45.001045 67.135216 67.141106 135.488770 161.509262 264.397430 264.398529 356.982361 427.162415 427.171295 488.626892 0.0146909 4.052325 4.171709 18.591270 45.095455 45.106167 67.332787 67.339836 135.192307 161.459198 264.570312 264.571594 356.837402 427.077637 427.088226 488.572388 0.0163233 4.609464 4.730593 20.576633 45.204498 45.216831 67.552429 67.560608 134.874420 161.404037 264.760773 264.762207 356.676910 426.983734 426.995972 488.535736 0.0179556 5.184724 5.305654 22.539581 45.317543 45.331360 67.793556 67.802795 134.537994 161.344223 264.967896 264.969543 356.501373 426.881012 426.894806 488.521790 0.0195879 5.775105 5.894149 24.479284 45.433022 45.448132 68.055443 68.065643 134.185562 161.280243 265.190857 265.192627 356.311340 426.769775 426.784973 488.534576 0.0212202 6.377100 6.492842 26.395229 45.549465 45.565639 68.337212 68.348251 133.819153 161.212708 265.428650 265.430542 356.107422 426.650391 426.666809 488.577118 0.0228526 6.986844 7.098142 28.287220 45.665531 45.682522 68.637848 68.649590 133.440231 161.142242 265.680328 265.682312 355.890259 426.523254 426.540619 488.651337 0.0244849 7.600268 7.706242 30.155350 45.780025 45.797562 68.956177 68.968475 133.049728 161.069534 265.944885 265.946899 355.660492 426.388733 426.406830 488.757904 0.0261172 8.213228 8.313245 31.999977 45.891907 45.909725 69.290909 69.303604 132.647964 160.995224 266.221222 266.223236 355.418884 426.247253 426.265869 488.896240 0.0277495 8.821624 8.915281 33.821686 46.000301 46.018143 69.640594 69.653542 132.234680 160.919968 266.508301 266.510284 355.166229 426.099335 426.118225 489.064667 0.0293819 9.421509 9.508613 35.621231 46.104481 46.122116 70.003693 70.016754 131.809174 160.844345 266.804993 266.806946 354.903290 425.945465 425.964386 489.260376 0.0310142 10.009186 10.089725 37.399487 46.203880 46.221107 70.378548 70.391609 131.370316 160.768860 267.110199 267.112091 354.630981 425.786133 425.804871 489.479736 0.0326465 10.581283 10.655408 39.157383 46.298061 46.314716 70.763435 70.776390 130.916702 160.693893 267.422791 267.424561 354.350220 425.621887 425.640320 489.718414 0.0342788 11.134824 11.202820 40.895817 46.386715 46.402679 71.156563 71.169342 130.446762 160.619736 267.741577 267.743256 354.061951 425.453278 425.471313 489.971588 0.0359112 11.667278 11.729541 42.615597 46.469639 46.484833 71.556091 71.568642 129.958908 160.546585 268.065369 268.066956 353.767151 425.280975 425.298462 490.234344 0.0375435 12.176597 12.233606 44.317364 46.546715 46.561108 71.960167 71.972458 129.451614 160.474487 268.393005 268.394470 353.466888 425.105499 425.122467 490.501617 0.0391758 12.661228 12.713528 46.001495 46.617905 46.631512 72.366920 72.378952 128.923615 160.403458 268.723267 268.724579 353.162231 424.927551 424.943970 490.768768 0.0408081 13.120132 13.168302 46.683239 46.696087 47.668091 72.774498 72.786285 128.373932 160.333435 269.054901 269.056091 352.854309 424.747742 424.763641 491.031464 0.0424405 13.552760 13.597393 46.742786 46.754971 49.316807 73.181068 73.192650 127.802040 160.264328 269.386658 269.387756 352.544312 424.566772 424.582214 491.286133 0.0440728 13.959032 14.000719 46.796665 46.808277 50.946926 73.584839 73.596260 127.207855 160.196075 269.717285 269.718292 352.233368 424.385345 424.400391 491.529816 0.0457051 14.339296 14.378603 46.845024 46.856182 52.557224 73.984062 73.995377 126.591888 160.128586 270.045502 270.046478 351.922791 424.204102 424.218903 491.760345 0.0473374 14.694277 14.731730 46.888042 46.898865 54.145988 74.377052 74.388329 125.955200 160.061874 270.370087 270.371002 351.613770 424.023834 424.038452 491.976501 0.0489698 15.025008 15.061077 46.925922 46.936523 55.710964 74.762192 74.773476 125.299477 159.995987 270.689728 270.690582 351.307617 423.845215 423.859772 492.177643 0.0506021 15.332761 15.367855 46.958885 46.969379 57.249382 75.137932 75.149284 124.626999 159.931030 271.003174 271.003998 351.005585 423.669006 423.683594 492.364014 0.0522344 15.618967 15.653423 46.987171 46.997658 58.757946 75.502800 75.514275 123.940659 159.867203 271.309143 271.309967 350.709015 423.495941 423.510620 492.536346 0.0538667 15.885136 15.919218 47.011055 47.021606 60.232845 75.855423 75.867043 123.243919 159.804779 271.606476 271.607300 350.419220 423.326782 423.341644 492.695862 0.0554991 16.132772 16.166672 47.030807 47.041485 61.669800 76.194481 76.206268 122.540810 159.744080 271.893890 271.894714 350.137451 423.162231 423.177338 492.843994 0.0571314 16.363308 16.397142 47.046741 47.057579 63.064083 76.518761 76.530731 121.835846 159.685455 272.170258 272.171112 349.865051 423.003082 423.018463 492.982452 0.0587637 16.578026 16.611855 47.059177 47.070183 64.410553 76.827141 76.839287 121.134033 159.629288 272.434479 272.435333 349.603271 422.850067 422.865662 493.112732 0.0603960 16.778009 16.811840 47.068451 47.079620 65.703712 77.118561 77.130875 120.440765 159.575974 272.685394 272.686279 349.353363 422.703857 422.719727 493.236267 0.0620284 16.964104 16.997898 47.074921 47.086231 66.937752 77.392059 77.404526 119.761826 159.525864 272.922058 272.922943 349.116516 422.565216 422.581268 493.354126 0.0636607 17.136887 17.170578 47.078957 47.090370 68.106590 77.646774 77.659348 119.103279 159.479324 273.143433 273.144348 348.893860 422.434784 422.451019 493.467041 0.0652930 17.296661 17.330172 47.080936 47.092411 69.203957 77.881889 77.894554 118.471436 159.436615 273.348694 273.349579 348.686554 422.313263 422.329590 493.575226 0.0669253 17.443468 17.476713 47.081245 47.092735 70.223427 78.096695 78.109413 117.872749 159.397949 273.536926 273.537811 348.495636 422.201202 422.217621 493.678528 0.0685577 17.577112 17.610016 47.080257 47.091717 71.158546 78.290558 78.303291 117.313782 159.363495 273.707428 273.708282 348.322021 422.099274 422.115692 493.776276 0.0701900 17.697197 17.729700 47.078350 47.089745 72.002876 78.462898 78.475632 116.801048 159.333328 273.859467 273.860352 348.166626 422.007935 422.024353 493.867493 0.0718223 17.803175 17.835247 47.075874 47.087170 72.750130 78.613235 78.625946 116.340919 159.307434 273.992493 273.993347 348.030273 421.927765 421.944122 493.950867 0.0734546 17.894409 17.926043 47.073158 47.084343 73.394325 78.741135 78.753815 115.939476 159.285797 274.105957 274.106781 347.913666 421.859131 421.875397 494.024933 0.0750870 17.970226 18.001450 47.070499 47.081570 73.929939 78.846260 78.858894 115.602333 159.268311 274.199371 274.200195 347.817413 421.802429 421.818634 494.088165 0.0767193 18.029982 18.060852 47.068150 47.079117 74.352081 78.928322 78.940903 115.334465 159.254868 274.272430 274.273224 347.742004 421.758026 421.774139 494.139099 0.0783516 18.073111 18.103708 47.066319 47.077202 74.656700 78.987091 78.999634 115.139992 159.245377 274.324799 274.325592 347.687836 421.726105 421.742157 494.176514 0.0799839 18.099174 18.129599 47.065159 47.075989 74.840736 79.022415 79.034935 115.022018 159.239716 274.356323 274.357086 347.655243 421.706879 421.722900 494.199371 0.0816163 18.107895 18.138260 47.064762 47.075573 74.902298 79.034195 79.046715 114.982483 159.237839 274.366821 274.367615 347.644348 421.700470 421.716461 494.207062