R
R. J. Warburton
Researcher at Ludwig Maximilian University of Munich
Publications - 32
Citations - 1972
R. J. Warburton is an academic researcher from Ludwig Maximilian University of Munich. The author has contributed to research in topics: Quantum dot & Exciton. The author has an hindex of 16, co-authored 32 publications receiving 1922 citations. Previous affiliations of R. J. Warburton include Heriot-Watt University.
Papers
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Journal ArticleDOI
Optical emission from a charge-tunable quantum ring
R. J. Warburton,R. J. Warburton,C. Schäflein,D. Haft,F. Bickel,Axel Lorke,Khaled Karrai,Jorge M. Garcia,Winston V. Schoenfeld,Pierre Petroff +9 more
TL;DR: It is found that the emission energy changes abruptly whenever an electron is added to the artificial atom, and that the sizes of the jumps reveal a shell structure.
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Charged Excitons in Self-Assembled Semiconductor Quantum Dots
R. J. Warburton,C. S. Dürr,Khaled Karrai,Jörg P. Kotthaus,Jörg P. Kotthaus,Gilberto Medeiros-Ribeiro,Pierre Petroff +6 more
TL;DR: In this article, an exact correspondence between Coulomb blockade in the device's vertical transport properties and Pauli blocking in the transmission spectra is established, and substantial shifts, up to 20 meV, in the energies of higher excitations on occupation of the electron ground state are observed.
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Coulomb interactions in small charge-tunable quantum dots: A simple model
R. J. Warburton,Barbara Therese Miller,C. S. Dürr,C. Bödefeld,Khaled Karrai,Jörg P. Kotthaus,Gilberto Medeiros-Ribeiro,Pierre Petroff,Serge Huant,Serge Huant +9 more
TL;DR: In this article, perturbation theory results for the Coulomb interactions between electrons, and between electrons and holes, in small quantum dots are presented, and the results are used to model both capacitance and interband spectroscopy on charge-tunable, self-assembled dots.
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Excitons in self-assembled quantum ring-like structures
H. Pettersson,R. J. Warburton,Axel Lorke,Khaled Karrai,Jörg P. Kotthaus,Jorge M. Garcia,Pierre Petroff +6 more
TL;DR: In this article, the authors report the results of capacitance and interband transmission experiments on such ring-like structures embedded in a GaAs matrix and compare the electronic properties of conventional dots with those of the rings.
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Intersubband resonances in InAs/AlSb quantum wells: Selection rules, matrix elements, and the depolarization field
TL;DR: Inclusion of the depolarization field in the theory gives good agreement with both the experimentally determined line shape and ^z& matrix element, and the effect remains small as compared to the conventional z excitation.