Publication

Intrasubband and intersubband scattering in semiconductor quantum wires

Elyahou Kapon, Benoît Marie Joseph Deveaud, Jean-Daniel Ganière, Daniel Oberli
1999
Journal Articles

Abstract

We have performed low-density (< 10(5) cm(-1)) time-resolved photoluminescence experiments that probe the relaxation of photo-excited carriers in a quantum wire. Our results show that carrier-carrier collisions are dominant at very short times both for intra- and for inter-subband scattering as only expected if non-Markovian effects are taken into account. (C) 1999 Elsevier Science B.V. All rights reserved.

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https://infoscience.epfl.ch/entities/publication/6f8c38f7-5f36-4a98-82e8-8979330b2f57

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Elyahou Kapon, Benoît Marie Joseph Deveaud, Jean-Daniel Ganière, Daniel Oberli
1999
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/6f8c38f7-5f36-4a98-82e8-8979330b2f57

About this result

Related concepts (20)

Quantum dot

Quantum dots (QDs) – also called semiconductor nanocrystals, are semiconductor particles a few nanometres in size, having optical and electronic properties that differ from those of larger particles as a result of quantum mechanics. They are a central topic in nanotechnology and materials science. When the quantum dots are illuminated by UV light, an electron in the quantum dot can be excited to a state of higher energy. In the case of a semiconducting quantum dot, this process corresponds to the transition of an electron from the valence band to the conductance band.

Quantum wire

In mesoscopic physics, a quantum wire is an electrically conducting wire in which quantum effects influence the transport properties. Usually such effects appear in the dimension of nanometers, so they are also referred to as nanowires. If the diameter of a wire is sufficiently small, electrons will experience quantum confinement in the transverse direction. As a result, their transverse energy will be limited to a series of discrete values.

Quantum tunnelling

In physics, quantum tunnelling, barrier penetration, or simply tunnelling is a quantum mechanical phenomenon in which an object such as an electron or atom passes through a potential energy barrier that, according to classical mechanics, the object does not have sufficient energy to enter or surmount. Tunneling is a consequence of the wave nature of matter, where the quantum wave function describes the state of a particle or other physical system, and wave equations such as the Schrödinger equation describe their behavior.

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Intrasubband and intersubband scattering in semiconductor quantum wires

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