{"id":"W2060827848","doi":"10.1103/physrevb.61.5337","title":"Second-order optical response in semiconductors","year":2000,"lang":"en","type":"article","venue":"Physical review. B, Condensed matter","topic":"Spectroscopy and Quantum Chemical Studies","field":"Physics and Astronomy","cited_by":887,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Toronto","funders":"Natural Sciences and Engineering Research Council of Canada","keywords":"Physics; Omega; Quantum mechanics; Excitation; Photocurrent; Semiconductor; Order (exchange); Nonlinear optical; Electron; Formalism (music); Atomic physics; Condensed matter physics; Mathematical physics; Nonlinear system","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["insufficient_payload"],"consensus_categories":["insufficient_payload"],"category_scores_codex":[0.0001777259,0.0002816238,0.0005770803,0.00002922702,0.00006032834,0.00002835281,0.0001956686,0.00003288406,0.05450185],"category_scores_gemma":[0.0000222089,0.0002352436,0.0002034416,0.0002763947,0.0001291051,0.0001246067,0.00005501326,0.0003895176,0.003410622],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00003573327,"about_ca_system_score_gemma":0.00003302121,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00002001767,"about_ca_topic_score_gemma":0.000001478949,"domain_scores_codex":[0.9984246,0.0001251634,0.0003607566,0.0004236398,0.0001927588,0.00047308],"domain_scores_gemma":[0.9991183,0.000331776,0.00005572572,0.0003282861,0.0000385627,0.0001273476],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.001937147,0.002783762,0.02403663,0.001100457,0.0004965896,0.00008497607,0.001136768,0.00001887167,0.7171179,0.02331956,0.2140776,0.01388977],"study_design_scores_gemma":[0.005357874,0.0005072013,0.05056786,0.002956266,0.000443223,0.00002302961,0.0002338431,0.0003792692,0.412396,0.1135662,0.4101111,0.003458168],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9618614,0.0007813249,0.00001631648,0.002686699,0.00004461717,0.0002614379,0.00002288943,0.000028107,0.03429716],"genre_scores_gemma":[0.9923708,0.00009315646,0.0000770425,0.005084389,0.0002423449,0.00009610358,0.0000177322,0.00002984113,0.001988536],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.3047219,"threshold_uncertainty_score":0.9973654,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.009642942232820638,"score_gpt":0.3060697073815241,"score_spread":0.2964267651487034,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}