Structure of quantum dots as seen by excitonic spectroscopy versus structural characterization: Using theory to close the loop

Mlinar, V., Bozkurt, M., Ulloa, M., Ediger, M., Bester, G., Badolato, A. , Koenraad, P.M., Warburton, R.J. and Zunger, A. (2009) Structure of quantum dots as seen by excitonic spectroscopy versus structural characterization: Using theory to close the loop. Physical Review B, 80, 165425. (doi: 10.1103/PhysRevB.80.165425)

Abstract

Structure-spectra relationship in semiconductor quantum dots (QDs) is investigated by subjecting the same QD sample to single-dot spectroscopy and cross-sectional scanning tunneling microscopy (XSTM) structural measurements. We find that the conventional approach of using XSTM structure as input to calculate the spectra produces some notable conflicts with the measured spectra. We demonstrate a theoretical “inverse approach” which deciphers structural information from the measured spectra and finds structural models that agree with both XSTM and spectroscopy data. This effectively “closes the loop” between structure and spectroscopy in QDs.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Badolato, Professor Antonio
• Authors: Mlinar, V., Bozkurt, M., Ulloa, M., Ediger, M., Bester, G., Badolato, A., Koenraad, P.M., Warburton, R.J., and Zunger, A.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Physical Review B
• Publisher: American Physical Society
• ISSN: 1098-0121
• ISSN (Online): 1550-235X