Γ-X hybridization effects on the carrier subband transition times in type I GaAsAlAs quantum wells

Lima, I. C. da Cunha; Weber, Gerald; Reinecke, T. L.

doi:10.1016/s0038-1098(97)00098-7

Cited by 2 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, a GaAs/AlAs quantum well undergoes a type-I-type-II transition for a width near 37 Å. Just before this width is reached, -X hybridization becomes relevant [25]. For this reason, we wanted to see whether, in narrow wells, such as one with L = 40 Å, the ELR behaviour was different from that of our calculations for L = 100 Å shown in the previous figures.…”

Section: Results and Commentsmentioning

confidence: 74%

Emission and absorption of confined and interface optical phonons by electrons in the non-linear transport regime of a parabolic quantum wire

Wang

Lima

Lei

1998

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

We present a detailed study of dissipation by electrons in the non-linear transport regime of harmonically confined quantum wires in GaAs/AlAs structures through emission and absorption of confined and interface optical phonons. An applied magnetic field perpendicular to the interfaces is used to modulate the natural harmonic frequencies in order to explore situations in and off resonance with the vibrational modes. Our results show that electrons absorb both confined phonons and interface phonons over wide angles and backwards, at low drift velocities. The emission occurs both forwards and backwards and dominates entirely for high drift velocities. The confined phonons play the dominant role in the dissipation, even for quantum wires inside thin quantum wells and with a magnetic field strength selected to make the harmonic levels in resonance with the AlAs-like interface mode.

show abstract

Section: Results and Commentsmentioning

confidence: 74%

Emission and absorption of confined and interface optical phonons by electrons in the non-linear transport regime of a parabolic quantum wire

Wang

Lima

Lei

1998

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…In order to describe the superlattice electron envelope wavefunction we use a Kronig-Penney model [9]. In a recent study [10], we have shown that the -X mixing has little effect on the intra-and inter-subband transition times due to emission of optical phonon modes in type I quantum wells. Therefore we do not include the -X mixing and thus we avoid any adjustable parameters.…”

mentioning

confidence: 99%

Γ to X electron transfer times in type-II GaAs/AlAs superlattices due to emission of confined and interface phonons

Weber

Paula

1998

Superlattices and Microstructures

View full text Add to dashboard Cite

Γ-X hybridization effects on the carrier subband transition times in type I GaAsAlAs quantum wells

Cited by 2 publications

References 23 publications

Emission and absorption of confined and interface optical phonons by electrons in the non-linear transport regime of a parabolic quantum wire

Emission and absorption of confined and interface optical phonons by electrons in the non-linear transport regime of a parabolic quantum wire

Γ to X electron transfer times in type-II GaAs/AlAs superlattices due to emission of confined and interface phonons

Contact Info

Product

Resources

About