Fujiwara, K.K.FujiwaraHinoda, S.I.S.I.HinodaKawashima, K.K.KawashimaSchneider, H.H.Schneider2022-03-092022-03-091995https://publica.fraunhofer.de/handle/publica/324879We have investigated resonant coupling between coupled Stark ladder states in a double-period GaAs/AlAs superlattice with a fixed well width (Lz = 3.2 nm) and alternating thinner (LB = 0.45 nm) and thicker (LB = 0.9 nm) barriers. Under applied electric field, the Stark ladder states coupled by the thinner barrier reveal a hierarchy of anticrossings in optical transitions due to resonances between the lower symmetric and the higher antisymmetric states belonging to the different well-pairs. By virtue of symmetry properties of the Stark ladder eigenstates, these resonances are rigorously identified by calculating the evolution of the eigenenergies and the wavefunctions using the transfer matrix method.enGa/AssuperlatticeÜbergitterWannier-Stark-localizationWannier-Stark-Lokalisierung004conference paper