Publication

Two decades of secondary emission in quantum wells

Vincenzo Savona
2002
Reviews

Abstract

We review the rapid progress during the last years in the study of secondary emission in quantum wells. On the experimental side, this progress was characterized by ever increasing temporal, spectral, and spatial resolution. On the theoretical side, the most appropriate description of the resonant low-excitation regime is the paradigm of disorder-localized exciton center-of-mass wavefunctions as developed by Roland Zimmermann and collaborators. In our contribution to this Festschrift, we focus on the recent developments in the study of secondary emission and on the major contribution by Roland Zimmermann to the understanding of such phenomena.

Official source

https://infoscience.epfl.ch/entities/publication/8aca4f42-93c8-4226-ad50-952b30095f62

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Vincenzo Savona
2002
Reviews

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/8aca4f42-93c8-4226-ad50-952b30095f62

About this result

Related concepts (6)

Matter wave

Matter waves are a central part of the theory of quantum mechanics, being half of wave–particle duality. All matter exhibits wave-like behavior. For example, a beam of electrons can be diffracted just like a beam of light or a water wave. The concept that matter behaves like a wave was proposed by French physicist Louis de Broglie (dəˈbrɔɪ) in 1924, and so matter waves are also known as de Broglie waves.

X-ray Raman scattering

X-ray Raman scattering (XRS) is non-resonant inelastic scattering of X-rays from core electrons. It is analogous to vibrational Raman scattering, which is a widely used tool in optical spectroscopy, with the difference being that the wavelengths of the exciting photons fall in the X-ray regime and the corresponding excitations are from deep core electrons. XRS is an element-specific spectroscopic tool for studying the electronic structure of matter. In particular, it probes the excited-state density of states (DOS) of an atomic species in a sample.

Photoluminescence

Photoluminescence (abbreviated as PL) is light emission from any form of matter after the absorption of photons (electromagnetic radiation). It is one of many forms of luminescence (light emission) and is initiated by photoexcitation (i.e. photons that excite electrons to a higher energy level in an atom), hence the prefix photo-. Following excitation, various relaxation processes typically occur in which other photons are re-radiated.