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Quantum Dots: Fundamentals, Applications, and Frontiers - Proceedings of the NATO ARW on Quantum Dots: Fundamentals, Applications and Frontiers, Crete, Greece 20 - 24 July 2003 (Hardcover, 2005 ed.)
Loot Price: R8,954
Discovery Miles 89 540
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Quantum Dots: Fundamentals, Applications, and Frontiers - Proceedings of the NATO ARW on Quantum Dots: Fundamentals, Applications and Frontiers, Crete, Greece 20 - 24 July 2003 (Hardcover, 2005 ed.)
Series: NATO Science Series II: Mathematics, Physics and Chemistry, 190
Expected to ship within 10 - 15 working days
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The morphology that results during the growth of a material on the
substrate of a different material is central to the fabrication of
all quantum heterostructures. This morphology is determined by
several factors, including the manner in which strain is
accommodated if the materials have different lattice constants. One
of the most topical manifestations of lattice mis't is the
formation of coherent thr-
dimensional(3D)islandsduringtheStranski-Krastanovgrowthofahighly-strained
system. The prototypical cases are InAs on GaAs(001) and Ge on
Si(001), though other materials combinations also exhibit this
phenomenon. When the 3D islands are embedded within epitaxiallayers
of a material that has a wider band gap, the carriers within the
islands are con?ned by the potential barriers that surround each
island, forming an array of quantum dots (QDs). Such structures
have been produced for both basic physics studies and device fab-
cation, including QD lasers and light-emitting diodes (LEDs)
operating at the c- mercially important wavelengths of 1.3 u m and
1.55 u m. On a more speculative level, QD ensembles have been
suggested as a possible pathway for the solid-state implementation
of a quantum computer. Although some of the principles of qu- tum
computing have been veri?ed by other means, the practical
utilization of this new computingparadigmmay warrant some sort of
solid state architecture. QDs are seen as possible components of
such a computer, as evidenced by a number of
papersappearingintheliteratureproposingQD-basedarchitecturesandworkshops
that are being organized to explore these possibilities."
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