# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    Z. Chen, S. Yang, Z. Xie, J. Hu, X. Zhang, Y. Xia, Y. Shen, H. Su, M. Xie, T. Christensen, Y. Yang.
    Broadband measurement of Feibelman’s quantum surface response functions.
    <a href="https://doi.org/10.1073/pnas.2501121122"><i>Proc. Natl. Acad. Sci. U.S.A.</i> <b>122</b>, e2501121122 (2025)</a>
    (Numerical data kindly provided by Zeling Chen)
DATA:
  - type: tabulated nk
    data: |
        0.210 1.367112 1.452925
        0.211 1.364514 1.458807
        0.212 1.372025 1.461380
        0.213 1.379379 1.459553
        0.214 1.386134 1.462659
        0.215 1.392143 1.461447
        0.216 1.380166 1.471833
        0.217 1.381091 1.480652
        0.218 1.388826 1.487883
        0.219 1.393415 1.482122
        0.220 1.393350 1.492730
        0.221 1.393087 1.505854
        0.222 1.390398 1.510202
        0.223 1.390131 1.518864
        0.224 1.387286 1.537253
        0.225 1.388683 1.547942
        0.226 1.395075 1.563094
        0.227 1.395623 1.579299
        0.228 1.395635 1.585182
        0.229 1.391209 1.591168
        0.230 1.385358 1.599302
        0.231 1.398196 1.603796
        0.232 1.396494 1.598107
        0.233 1.388041 1.604801
        0.234 1.392818 1.613049
        0.235 1.405660 1.615190
        0.236 1.408854 1.621376
        0.237 1.405365 1.629226
        0.238 1.409908 1.628317
        0.239 1.403182 1.637907
        0.240 1.406507 1.644393
        0.241 1.406107 1.645774
        0.242 1.402621 1.656864
        0.243 1.405771 1.662979
        0.244 1.408093 1.667339
        0.245 1.410908 1.678217
        0.246 1.412861 1.687343
        0.247 1.416482 1.695761
        0.248 1.422868 1.698886
        0.249 1.420378 1.702927
        0.250 1.415759 1.713777
        0.251 1.422886 1.719840
        0.252 1.423433 1.729230
        0.253 1.429100 1.739280
        0.254 1.439467 1.739091
        0.255 1.444174 1.745526
        0.256 1.447678 1.756165
        0.257 1.451919 1.765101
        0.258 1.462317 1.772259
        0.259 1.469467 1.782325
        0.260 1.473032 1.786993
        0.261 1.475730 1.798567
        0.262 1.484505 1.809435
        0.263 1.499444 1.814954
        0.264 1.509254 1.818473
        0.265 1.518665 1.819820
        0.266 1.528561 1.833030
        0.267 1.533974 1.835988
        0.268 1.539857 1.842531
        0.269 1.550880 1.845196
        0.270 1.559032 1.848370
        0.271 1.562889 1.857946
        0.272 1.573257 1.866766
        0.273 1.569328 1.866180
        0.274 1.571209 1.869123
        0.275 1.596870 1.847070
        0.276 1.590314 1.872170
        0.277 1.603700 1.873528
        0.278 1.607148 1.876398
        0.279 1.610119 1.890035
        0.280 1.630084 1.860755
        0.281 1.627408 1.878176
        0.282 1.635879 1.895685
        0.283 1.642714 1.895970
        0.284 1.645150 1.900396
        0.285 1.657149 1.910390
        0.286 1.653855 1.919184
        0.287 1.650762 1.923300
        0.288 1.662801 1.906904
        0.289 1.641794 1.961766
        0.290 1.672430 1.950611
        0.291 1.703001 1.918003
        0.292 1.658373 1.963106
        0.293 1.657864 1.951550
        0.294 1.665223 1.960220
        0.295 1.683118 1.953736
        0.296 1.683267 1.954853
        0.297 1.662331 1.977437
        0.298 1.667981 1.973930
        0.299 1.658975 1.986770
        0.300 1.661096 1.993363
        0.301 1.666139 1.986765
        0.302 1.655643 1.991217
        0.303 1.669013 1.984783
        0.304 1.675879 1.967959
        0.305 1.650953 1.982234
        0.306 1.657038 1.984055
        0.307 1.670117 1.966955
        0.308 1.668954 1.972289
        0.309 1.684321 1.937855
        0.310 1.667674 1.939479
        0.311 1.660446 1.970168
        0.312 1.671262 1.957507
        0.313 1.679998 1.954124
        0.314 1.698256 1.971043
        0.315 1.702810 1.956819
        0.316 1.716775 1.954545
        0.317 1.699332 1.956428
        0.318 1.719841 1.961743
        0.319 1.723637 1.973683
        0.320 1.727041 1.964191
        0.321 1.727593 1.944158
        0.322 1.726906 1.964177
        0.323 1.735575 1.951244
        0.324 1.727180 1.998777
        0.325 1.717887 1.967012
        0.326 1.704759 1.971533
        0.327 1.728862 1.972268
        0.328 1.749908 1.962793
        0.329 1.741440 1.965924
        0.330 1.739885 1.939863
        0.331 1.733952 1.946452
        0.332 1.743054 1.947798
        0.333 1.754266 1.936282
        0.334 1.743143 1.935006
        0.335 1.725914 1.939622
        0.336 1.729949 1.941454
        0.337 1.737543 1.950494
        0.338 1.795074 1.883140
        0.339 1.733111 1.965444
        0.340 1.710431 1.965858
        0.341 1.774777 1.882031
        0.342 1.699085 1.967191
        0.343 1.721758 1.912063
        0.344 1.741204 1.856895
        0.345 1.729599 1.897032
        0.346 1.715317 1.889292
        0.347 1.712423 1.913841
        0.348 1.710631 1.912217
        0.349 1.699055 1.891975
        0.350 1.708620 1.887730
        0.351 1.703155 1.866835
        0.352 1.688169 1.888256
        0.353 1.671802 1.909747
        0.354 1.682215 1.880302
        0.355 1.664453 1.870037
        0.356 1.649893 1.920604
        0.357 1.652544 1.884549
        0.358 1.635831 1.918530
        0.359 1.629262 1.936430
        0.360 1.626199 1.905701
        0.361 1.621759 1.906305
        0.362 1.607649 1.911066
        0.363 1.617554 1.911410
        0.364 1.593151 1.914982
        0.365 1.563041 1.925248
        0.366 1.579472 1.916189
        0.367 1.578829 1.919114
        0.368 1.580896 1.925000
        0.369 1.553934 1.928706
        0.370 1.562264 1.917243
        0.371 1.518987 1.957315
        0.372 1.527049 1.938320
        0.373 1.564000 1.914542
        0.374 1.505785 1.949788
        0.375 1.547413 1.939870
        0.376 1.528520 1.930936
        0.377 1.519903 1.939346
        0.378 1.542641 1.935217
        0.379 1.524207 1.953577
        0.380 1.522485 1.953461
        0.381 1.492528 1.972401
        0.382 1.498394 1.952701
        0.383 1.514888 1.925497
        0.384 1.520638 1.956345
        0.385 1.526472 1.983456
        0.386 1.517357 1.962572
        0.387 1.500963 1.965799
        0.388 1.549000 1.952198
        0.389 1.502474 1.982782
        0.390 1.514940 1.983553
        0.391 1.546379 1.957140
        0.392 1.524007 1.972150
        0.393 1.511446 1.980449
        0.394 1.522059 1.978612
        0.395 1.535100 1.982865
        0.396 1.537530 1.978262
        0.397 1.512020 1.971768
        0.398 1.513434 1.981896
        0.399 1.524238 1.982273
        0.400 1.536707 1.980726
        0.401 1.546037 1.972885
        0.402 1.536113 1.998781
        0.403 1.513538 1.973063
        0.404 1.559149 1.958855
        0.405 1.555926 1.966690
        0.406 1.494778 1.980810
        0.407 1.535301 1.977791
        0.408 1.533732 1.965501
        0.409 1.522427 1.978472
        0.410 1.517017 1.989812
        0.411 1.522251 1.984052
        0.412 1.525241 1.966621
        0.413 1.520296 1.963616
        0.414 1.533869 1.969162
        0.415 1.520885 1.979331
        0.416 1.503729 1.964886
        0.417 1.525453 1.964392
        0.418 1.529215 1.968672
        0.419 1.521503 1.954923
        0.420 1.518955 1.969168
        0.421 1.519799 1.984596
        0.422 1.522599 1.984580
        0.423 1.511682 2.000481
        0.424 1.522856 1.985799
        0.425 1.530004 1.955877
        0.426 1.523352 1.964896
        0.427 1.523422 1.966172
        0.428 1.513687 1.977208
        0.429 1.498567 1.987863
        0.430 1.501425 1.972396
        0.431 1.491314 1.968828
        0.432 1.489206 1.963500
        0.433 1.489632 1.978617
        0.434 1.479708 1.987537
        0.435 1.483994 1.965987
        0.436 1.509576 1.970367
        0.437 1.485690 1.983349
        0.438 1.469436 1.969238
        0.439 1.456921 1.967861
        0.440 1.454283 1.973089
        0.441 1.451788 1.972317
        0.442 1.456248 1.963304
        0.443 1.451400 1.957982
        0.444 1.431631 1.962301
        0.445 1.441385 1.959955
        0.446 1.420656 1.949370
        0.447 1.426154 1.942075
        0.448 1.433911 1.948800
        0.449 1.418843 1.947305
        0.450 1.414531 1.939655
        0.451 1.422495 1.936092
        0.452 1.410597 1.923568
        0.453 1.387854 1.932477
        0.454 1.393643 1.934227
        0.455 1.388504 1.922621
        0.456 1.370645 1.924857
        0.457 1.372256 1.914892
        0.458 1.382257 1.913333
        0.459 1.371471 1.913829
        0.460 1.351194 1.906056
        0.461 1.348216 1.902248
        0.462 1.353535 1.904713
        0.463 1.345613 1.898617
        0.464 1.336790 1.895565
        0.465 1.328071 1.903639
        0.466 1.310949 1.911580
        0.467 1.305404 1.899094
        0.468 1.306642 1.890578
        0.469 1.295100 1.884494
        0.470 1.296003 1.874108
        0.471 1.276857 1.866006
        0.472 1.271419 1.870505
        0.473 1.259808 1.872061
        0.474 1.251180 1.868743
        0.475 1.235785 1.872382
        0.476 1.232429 1.873234
        0.477 1.212361 1.865436
        0.478 1.190011 1.861587
        0.479 1.187347 1.856785
        0.480 1.166899 1.857621
        0.481 1.160663 1.856422
        0.482 1.141524 1.856856
        0.483 1.131284 1.859216
        0.484 1.101390 1.858736
        0.485 1.080260 1.863979
        0.486 1.078619 1.861180
        0.487 1.052910 1.884603
        0.488 1.038428 1.881877
        0.489 1.027660 1.835363
        0.490 1.004041 1.860142
        0.491 0.988525 1.874919
        0.492 0.967551 1.871867
        0.493 0.951157 1.873351
        0.494 0.926173 1.869956
        0.495 0.905022 1.877778
        0.496 0.887432 1.883514
        0.497 0.867498 1.890237
        0.498 0.840344 1.896950
        0.499 0.815063 1.905257
        0.500 0.800133 1.918239
        0.501 0.776558 1.927548
        0.502 0.757693 1.932924
        0.503 0.734860 1.941050
        0.504 0.716178 1.945941
        0.505 0.704604 1.956632
        0.506 0.694258 1.971615
        0.507 0.674173 1.982285
        0.508 0.656376 1.993841
        0.509 0.651703 2.009845
        0.510 0.641713 2.023755
        0.511 0.624260 2.040945
        0.512 0.605960 2.048621
        0.513 0.595986 2.057477
        0.514 0.584861 2.079073
        0.515 0.574611 2.087266
        0.516 0.564166 2.114490
        0.517 0.556036 2.131982
        0.518 0.548462 2.136691
        0.519 0.542357 2.155420
        0.520 0.529535 2.168157
        0.521 0.519958 2.186135
        0.522 0.515606 2.199553
        0.523 0.507399 2.217379
        0.524 0.501121 2.235009
        0.525 0.491843 2.244555
        0.526 0.485201 2.265478
        0.527 0.477940 2.279041
        0.528 0.478103 2.294509
        0.529 0.470893 2.312222
        0.530 0.461867 2.334006
        0.531 0.470988 2.364397
        0.532 0.460657 2.374575
        0.533 0.446648 2.392567
        0.534 0.444937 2.422941
        0.535 0.436831 2.433318
        0.536 0.431715 2.453456
        0.537 0.427565 2.472678
        0.538 0.429940 2.483544
        0.539 0.428064 2.505164
        0.540 0.410950 2.517595
        0.541 0.405998 2.532973
        0.542 0.397605 2.543670
        0.543 0.395139 2.561499
        0.544 0.388715 2.577771
        0.545 0.386811 2.593686
        0.546 0.379481 2.610084
        0.547 0.369619 2.623452
        0.548 0.354669 2.628127
        0.549 0.355874 2.644963
        0.550 0.355427 2.664421
        0.551 0.348109 2.675228
        0.552 0.346136 2.696860
        0.553 0.335241 2.696108
        0.554 0.336747 2.722030
        0.555 0.336394 2.743046
        0.556 0.325055 2.750535
        0.557 0.311579 2.762722
        0.558 0.304419 2.768689
        0.559 0.298565 2.788549
        0.560 0.294205 2.801612
        0.561 0.285051 2.815175
        0.562 0.284579 2.833612
        0.563 0.271062 2.822570
        0.564 0.263405 2.838818
        0.565 0.262081 2.858953
        0.566 0.261310 2.861961
        0.567 0.259868 2.876276
        0.568 0.248300 2.877804
        0.569 0.235896 2.865905
        0.570 0.235341 2.876576
        0.571 0.221938 2.878785
        0.572 0.216571 2.878787
        0.573 0.214663 2.896019
        0.574 0.209049 2.907246
        0.575 0.203091 2.910951
        0.576 0.192928 2.914569
        0.577 0.195663 2.921369
        0.578 0.186449 2.930512
        0.579 0.182600 2.945969
        0.580 0.175958 2.951806
        0.581 0.177474 2.940250
        0.582 0.182247 2.957340
        0.583 0.165868 2.984605
        0.584 0.153770 2.994770
        0.585 0.156117 2.999387
        0.586 0.149822 3.013794
        0.587 0.148535 3.019085
        0.588 0.138024 3.020399
        0.589 0.128782 3.045793
        0.590 0.124775 3.058071
        0.591 0.128519 3.071412
        0.592 0.126213 3.079995
        0.593 0.127671 3.073548
        0.594 0.121663 3.087270
        0.595 0.111490 3.071380
        0.596 0.106001 3.099089
        0.597 0.093656 3.133691
        0.598 0.093516 3.137468
        0.599 0.090323 3.133125
        0.600 0.087845 3.131318