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• W2006943947 abstract "We investigate, in one spatial dimension, the quantum mechanical tunneling of an exciton incident upon a heterostructure barrier. We model the relative motion eigenstates of the exciton using a form of the one-dimensional hydrogen atom which avoids difficulties previously associated with 1D hydrogenic states. We obtain probabilities of reflection and transmission using the method of variable transmission and reflection amplitudes. Our calculations may be broadly divided into two sets. In the first set, we consider general qualitative aspects of exciton tunneling, such as the effect of different effective masses for electrons and holes and a relative difference in electron and hole barrier strengths. The second set models the tunneling of an exciton in a GaAs/Al(x)Ga(1-x)As heterostructure. In these calculations we find that, for energies such that the two lowest exciton states are coupled, the probability spectrum for transition from the ground state to the first excited state is identical to that for transition from the first excited state to the ground state. In addition, narrow peaks in the probability spectrum for transition are observed across this energy range for low dopant concentration x. Other interesting phenomena correlated with these peaks in the transition probability are reported." @default.
• W2006943947 created "2016-06-24" @default.
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• W2006943947 date "2012-08-21" @default.
• W2006943947 modified "2023-09-27" @default.
• W2006943947 title "Tunneling and reflection of an exciton incident upon a quantum heterostructure barrier" @default.
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• W2006943947 doi "https://doi.org/10.1088/0953-8984/24/36/365802" @default.
• W2006943947 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22907119" @default.
• W2006943947 hasPublicationYear "2012" @default.
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