Energy transfer in ZnSe/(Zn,Mn)Se double quantum wells

Jankowski, Stephanie; Heimbrodt, W.

doi:10.1002/pssc.200983175

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Spin relaxation and its effects on exciton tunneling was studied in [16]. The role of exciton tunneling in combination with other interwell transfer mechanisms in ZnSe/ZnMnSe was discussed in [17] and [18]. Multiple mechanisms for exciton tunneling were examined in [19].…”

Section: Historical Survey Of Exciton Tunneling Studiesmentioning

confidence: 99%

Tunneling and reflection of an exciton incident upon a quantum heterostructure barrier

Kavka

Shegelski

Hong

2012

J. Phys.: Condens. Matter

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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.

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Section: Historical Survey Of Exciton Tunneling Studiesmentioning

confidence: 99%

Tunneling and reflection of an exciton incident upon a quantum heterostructure barrier

Kavka

Shegelski

Hong

2012

J. Phys.: Condens. Matter

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“…Space charge effects resulting from exciton tunnelling were reported in [11]. The role of exciton tunnelling and interwell transfer mechanisms in ZnSe/ZnMnSe was discussed in [12] and [13]. Multiple mechanisms for exciton tunnelling were examined in [14], and device applications in semiconductor lasers were reported in [15].…”

Section: Introductionmentioning

confidence: 99%

Resonant transmission of weakly bound multi-atomic molecules

Shegelski

Jones

Sample

et al. 2019

J. Phys. B: At. Mol. Opt. Phys.

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This article examines resonant tunnelling of multi-atomic systems, extending the body of work on resonant tunnelling in this area beyond diatomic homo-nuclear systems. We consider diatomic molecules with distinct atoms having different masses, and linear triatomic molecules with indistinguishable atoms. The molecule is incident in the bound state upon a step potential with an energy increase of V0 for each atom. We calculate the probabilities of reflection pR and transmission pT in the bound state and the dependence on the energy of the molecule. We find that, as was the case for the homo-nuclear molecule, resonant transmission for diatomic molecules with distinguishable atoms occurs for arbitrarily weak binding, and pT is close to one for finite binding energy. We also find resonant transmission for linear triatomic molecules. We show results for the time-dependent Schrödinger equation which agree with resonant transmission. We also consider the transmission of an N-atom one-dimensional molecule.

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