Effect of well width on the wavefunction spillover in GaAs/AlGaAs quantum wells

Authors

Raisa Mustapha ⋅ PH National Institute of Physics, University of the Philippines Diliman
Alexander De Los Reyes ⋅ PH National Institute of Physics, University of the Philippines Diliman
John Daniel Vasquez ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Miguel Bacaoco ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elmer Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Wavefunction spillover in a GaAs/AlGaAs quantum well (MQW) was investigated by varying its well width. A numerical simulation of the solution to the Schrödinger equation for a finite potential well under the effective mass approximation showed that the wavefunctions are significantly spilled out for narrow quantum wells (≤50Å). Photoluminescence (PL) and photoreflectance (PR) measurements were then performed on 50Å and 90Å quantum wells to investigate experimental manifestation of wavefunction spillover. It was found that wavefunction spillover manifests in the PR line shape.

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Issue

2018: Proceedings of the 36th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2018-PA-49

Section

Poster Session A (Materials Science, Instrumentation, and Photonics)

Published

2018-05-31

How to Cite

[1]

R Mustapha, A De Los Reyes, JD Vasquez, M Bacaoco, A Salvador, A Somintac, and E Estacio, Effect of well width on the wavefunction spillover in GaAs/AlGaAs quantum wells, Proceedings of the Samahang Pisika ng Pilipinas 36, SPP-2018-PA-49 (2018). URL: https://proceedings.spp-online.org/article/view/SPP-2018-PA-49.