Stark-ladder transition in a type-II (GaAs) 8 /(AlAs) 8 superlattice
作者： M Yamaguchi , H Nagasawa , M Morifuji , K Taniguchi , C Hamaguchi
DOI: 10.1088/0268-1242/9/10/010
关键词: Chemistry 、 Spectral line 、 Electric field 、 Superlattice 、 Condensed matter physics 、 Atomic physics 、 Conduction band 、 Valence band 、 Spectroscopy 、 Stark effect 、 Electron
摘要: The Stark-ladder transitions in a type-II (GaAs)8/(AlAs)8 superlattice are investigated under various uniform electric fields by using electroreflectance spectroscopy. spectra suggest the existence of transition from heavy-hole state Gamma valence band to electron X conduction band. Stark ladders miniband show strong mixing with miniband. experimental data measurements compared theoretical calculation based on tight-binding method, and reasonable agreement is found.
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