🌐EnglishEnglishDeutschPortuguêsالعربية日本語EntityQ239719· pop 5· linked from 8 articlesKohn anomalyan anomaly in the dispersion relation of a phonon branch in a metalAvailable in 5 languagesDeutsch日本語Portuguêsالعربيةvia Wikidata sitelinks · CC0ConnectionsFermi surfaceEntityenergyEntityCategoriesCondensed matter physics