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Ballistic Electron Emission Microscopy on buried GaAsAlGaAs superlattices

✍ Scribed by J. Smoliner; R. Heer; G. Strasser

Book ID
104306609
Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
329 KB
Volume
47
Category
Article
ISSN
0167-9317

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✦ Synopsis

In Ballistic Electron Emission Microscopy, ballistic electrons are injected from a metallic base contact into a semiconductor.

In the this experiment, the miniband of a GaAs-AlGaAs superlattice is employed as energy filter in order to study the energetic distribution of the ballistic electrons injected into the semiconductor. It is found, that due to the large difference in electron mass between Au and GaAs, parallel momentum conservation leads to considerable electron refraction at the Au-GaAs interface. Moreover, a resonant tunneling structure directly at the sample surface can act as momentum filter for electrons injected at k,,=O.

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Biased GaAs/AlGaAs superlattices employe
Biased GaAs/AlGaAs superlattices employed as energy filter for ballistic electron emission microscopy
✍ Smoliner, J.; Heer, R.; Strasser, G. 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 107 KB 👁 1 views

In this work, buried superlattices are employed as an energy Ðlter in order to study the energy Al 0.4 Ga 0.6 As/GaAs distribution of the ballistic electron current in ballistic electron emission microscopy (BEEM). As the measured total transmission of the superlattice is in excellent agreement with