🌐EnglishEnglishFrançaisفارسی中文日本語EntityQ25106162· pop 5· linked from 33 articlesDirac conequantum effect in some non-metals that increases their conductivity to intermediate levels between insulators and conductorsAvailable in 5 languages中文日本語Catalanفارسیvia Wikidata sitelinks · CC0ConnectionsphysicsEntityquantum mechanicsEntityCategoriesCitation overkillElectronic band structuresSemimetals