Three-dimensional electronic spectroscopy of excitons in asymmetric double quantum wells
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Davis, J. A.; Hall, C. R.; Dao, Lap Van; Nugent, K. A.; Quiney, H. M.; Jagadish, C.; Tan, Hark Hoe
Description
We demonstrate three-dimensional (3D) electronic spectroscopy of excitons in a double quantum well system using a three-dimensional phase retrieval algorithm to obtain the phase information that is lost in the measurement of intensities. By extending the analysis of two-dimensional spectroscopy to three dimensions, contributions from different quantum mechanical pathways can be further separated allowing greater insight into the mechanisms responsible for the observed peaks. By examining...[Show more]
dc.contributor.author | Davis, J. A. | |
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dc.contributor.author | Hall, C. R. | |
dc.contributor.author | Dao, Lap Van | |
dc.contributor.author | Nugent, K. A. | |
dc.contributor.author | Quiney, H. M. | |
dc.contributor.author | Jagadish, C. | |
dc.contributor.author | Tan, Hark Hoe | |
dc.date.accessioned | 2015-11-16T02:53:33Z | |
dc.date.available | 2015-11-16T02:53:33Z | |
dc.identifier.issn | 0021-9606 | |
dc.identifier.uri | http://hdl.handle.net/1885/16500 | |
dc.description.abstract | We demonstrate three-dimensional (3D) electronic spectroscopy of excitons in a double quantum well system using a three-dimensional phase retrieval algorithm to obtain the phase information that is lost in the measurement of intensities. By extending the analysis of two-dimensional spectroscopy to three dimensions, contributions from different quantum mechanical pathways can be further separated allowing greater insight into the mechanisms responsible for the observed peaks. By examining different slices of the complete three-dimensional spectrum, not only can the relative amplitudes be determined, but the peak shapes can also be analysed to reveal further details of the interactions with the environment and inhomogeneous broadening. We apply this technique to study the coupling between two coupled quantum wells, 5.7 nm and 8 nm wide, separated by a 4 nm barrier. Coupling between the heavy-hole excitons of each well results in a circular cross-peak indicating no correlation of the inhomogeneous broadening. An additional cross-peak is isolated in the 3D spectrum which is elongated in the diagonal direction indicating correlated inhomogeneous broadening. This is attributed to coupling of the excitons involving the two delocalised light-hole states and the electron state localised on the wide well. The attribution of this peak and the analysis of the peak shapes is supported by numerical simulations of the electron and hole wavefunctions and the three-dimensional spectrum based on a density matrix approach. An additional benefit of extending the phase retrieval algorithm from two to three dimensions is that it becomes substantially more reliable and less susceptible to noise as a result of the more extensive use of a priori information. | |
dc.description.sponsorship | The authors gratefully acknowledge the Australian Research Council and Australian National Fabrication Facility for financial support. | |
dc.publisher | American Institute of Physics (AIP) | |
dc.rights | http://www.sherpa.ac.uk/romeo/issn/0021-9606..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 16/11/15). Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in The Journal of Chemical Physics and may be found at https://doi.org/10.1063/1.3613679 | |
dc.source | The Journal of Chemical Physics | |
dc.subject | Keywords: A-density; Coupled quantum well; Double quantum well; Double-quantum well systems; Electron state; Electronic spectroscopy; Hole wave functions; Inhomogeneous broadening; Peak shapes; Phase information; Phase retrieval algorithm; Priori information; Quant | |
dc.title | Three-dimensional electronic spectroscopy of excitons in asymmetric double quantum wells | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 135 | |
dc.date.issued | 2011-07-28 | |
local.identifier.absfor | 029999 | |
local.identifier.ariespublication | u4153526xPUB76 | |
local.publisher.url | https://www.aip.org/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Davis, Jeff A, Swinburne University of Technology, Australia | |
local.contributor.affiliation | Hall, C R, Swinburne University of Technology, Australia | |
local.contributor.affiliation | Dao, Lap Van, Swinburne University of Technology, Australia | |
local.contributor.affiliation | Nugent, Keith Alexander, University of Melbourne, Australia | |
local.contributor.affiliation | Quiney, Harry Morris, University of Melbourne, Australia | |
local.contributor.affiliation | Tan, Hoe Hark, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University | |
local.contributor.affiliation | Jagadish, Chennupati, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University | |
local.identifier.essn | 1089-7690 | |
local.bibliographicCitation.issue | 4 | |
local.bibliographicCitation.startpage | 044510 | |
local.bibliographicCitation.lastpage | 9 | |
local.identifier.doi | 10.1063/1.3613679 | |
dc.date.updated | 2016-02-24T10:38:15Z | |
local.identifier.scopusID | 2-s2.0-79961079787 | |
local.identifier.thomsonID | 000293477300059 | |
Collections | ANU Research Publications |
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