Wachstum und Charakterisierung von Halbleiternanostrukturen auf vorstrukturiertem Substrat
Wachstum und Charakterisierung von Halbleiternanostrukturen auf vorstrukturiertem Substrat
Over the last two decades there has been intense theoretical and experimental interestin the physics of low-dimensional electron systems which are predicted to exhibit uniqueelectronic and optical properties. The reduced phase space available for electronscattering in one-dimensional systems - so ca...
| Personal Name(s): | Schwarz, Axel (Corresponding author) |
|---|---|
| Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
| Imprint: |
Jülich
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
2002
|
| Physical Description: |
IV, 123 p. |
| Document Type: |
Report Book |
| Research Program: |
ohne Topic |
| Series Title: |
Berichte des Forschungszentrums Jülich
3926 |
| Link: |
OpenAccess OpenAccess |
| Publikationsportal JuSER |
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| 245 | |a Wachstum und Charakterisierung von Halbleiternanostrukturen auf vorstrukturiertem Substrat | ||
| 260 | |a Jülich |c 2002 |b Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag | ||
| 300 | |a IV, 123 p. | ||
| 490 | 0 | |a Berichte des Forschungszentrums Jülich |v 3926 | |
| 520 | |a Over the last two decades there has been intense theoretical and experimental interestin the physics of low-dimensional electron systems which are predicted to exhibit uniqueelectronic and optical properties. The reduced phase space available for electronscattering in one-dimensional systems - so called quantum wires - is expected to leadto a greatly enhanced mobility. Furthermore Fermi liquid behavior is predicted to giveway to Luttinger liquid behavior due to strong electron correlation while electron-holeinteraction should manifest in Fermi edge singularities to be observed in photoluminescencespectra. This thesis reports the successful preparation of high quality quantumwires by epitaxially overgrowing non-planar substrates. After discussing the basicgrowth mechanisms an such special surfaces, bandstructure calculations are used tohelp understanding the quantization properties of the resulting complex structuresof interconnected there-, two- and one-dimensional areas. Cathodo- and photoluminescenceexperiments prove the formation of high-quality quantum wires with strongconfinement potential and large subband spacing. Even the existence of Fermi edgesingularities in modulation doped systems can be revealed. While magneto-transportdoes not show clear evidence of one-dimensional electron transport, special experimentsindicate a restriction of current to the quantum wire as long the Fermi edgestays undisturbed. | ||
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