Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491322 |
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Title: | Path integral quantum Monte Carlo for semiconductor nanostructures | ||||||
Author: | Gillies, Patrick R. |
ISNI:
0000 0001 3500 1781
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Awarding Body: | Heriot-Watt University | ||||||
Current Institution: | Heriot-Watt University | ||||||
Date of Award: | 2007 | ||||||
Availability of Full Text: |
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Abstract: | |||||||
Path integral quantum Monte Carlo (PI-QMC) is a powerful technique, which can be
used to model the properties of multiple interacting particles at finite temperatures.
In this work path integral quantum Monte Carlo has been applied to the problem of
few particle interactions in quantum dots and other semiconductor nanostructures.
Quantum dots are currently the subject of much research and in order to further
understand their properties it is necessary to perform theoretical modelling.
In this work, the method by which the problem of the attractive Coulomb potential
was overcome is detailed. Following that, comparisons are made between
. experimental data and PI-QMC results for excitonic complexes in 111-V dots. Both
the energies and voltage extents were found to show good agreement between experiment
and theory.
Comparisons are also between theory and experiment of II-VI, with experimental
data using a harmonic potential to model the dot. Again, good agreement is seen.
Finally, as an example of the power of PI-QMC, the behaviour of electrons and
holes is modelled for alternative nanostructures, such as coupled quantum dots,
quantum rings and core-shell structures. With some simple modifications, the same
PI-QMC method could be used.
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Supervisor: | Not available | Sponsor: | Not available | ||||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||||
EThOS ID: | uk.bl.ethos.491322 | DOI: | Not available | ||||
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