Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy

The incorporation of magnetic impurities into semiconductor nanocrystals with size confinement promotes enhanced spin exchange interaction between photogenerated carriers and the guest spins. This interaction stimulates new magneto-optical properties with significant advantages for emerging spin-bas...

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Main Authors: Strassberg, Rotem, Delikanli, Savas, Barak, Yahel, Dehnel, Joanna, Kostadinov, Alyssa, Maikov, Georgy, Hernandez-Martinez, Pedro Ludwig, Sharma, Manoj, Demir, Hilmi Volkan, Lifshitz, Efrat
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/140194
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1401942023-02-28T19:47:57Z Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy Strassberg, Rotem Delikanli, Savas Barak, Yahel Dehnel, Joanna Kostadinov, Alyssa Maikov, Georgy Hernandez-Martinez, Pedro Ludwig Sharma, Manoj Demir, Hilmi Volkan Lifshitz, Efrat School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences The Photonics Institute Centre of Excellence for Semiconductor Lighting and Displays Engineering::Electrical and electronic engineering Colloidal Semiconductors Magnetic Dopants The incorporation of magnetic impurities into semiconductor nanocrystals with size confinement promotes enhanced spin exchange interaction between photogenerated carriers and the guest spins. This interaction stimulates new magneto-optical properties with significant advantages for emerging spin-based technologies. Here we observe and elaborate on carrier-guest interactions in magnetically doped colloidal nanoplatelets with the chemical formula CdSe/Cd1-xMn x S, explored by optically detected magnetic resonance and magneto-photoluminescence spectroscopy. The host matrix, with a quasi-type II electronic configuration, introduces a dominant interaction between a photogenerated electron and a magnetic dopant. Furthermore, the data convincingly presents the interaction between an electron and nuclear spins of the doped ions located at neighboring surroundings, with consequent influence on the carrier's spin relaxation time. The nuclear spin contribution by the magnetic dopants in colloidal nanoplatelets is considered here for the first time. NRF (Natl Research Foundation, S’pore) Accepted version 2020-05-27T05:36:30Z 2020-05-27T05:36:30Z 2019 Journal Article Strassberg, R.., Delikanli, S., Barak, Y., Dehnel, J., Kostadinov, A., Maikov, G., . . . Lifshitz, E. (2019). Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy. Journal of Physical Chemistry Letters, 10(15), 4437–4447. doi:10.1021/acs.jpclett.9b01999 1948-7185 https://hdl.handle.net/10356/140194 10.1021/acs.jpclett.9b01999 31314537 2-s2.0-85070552522 15 10 4437 4447 en Journal of physical chemistry letters This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of physical chemistry letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpclett.9b01999. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Colloidal Semiconductors
Magnetic Dopants
spellingShingle Engineering::Electrical and electronic engineering
Colloidal Semiconductors
Magnetic Dopants
Strassberg, Rotem
Delikanli, Savas
Barak, Yahel
Dehnel, Joanna
Kostadinov, Alyssa
Maikov, Georgy
Hernandez-Martinez, Pedro Ludwig
Sharma, Manoj
Demir, Hilmi Volkan
Lifshitz, Efrat
Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy
description The incorporation of magnetic impurities into semiconductor nanocrystals with size confinement promotes enhanced spin exchange interaction between photogenerated carriers and the guest spins. This interaction stimulates new magneto-optical properties with significant advantages for emerging spin-based technologies. Here we observe and elaborate on carrier-guest interactions in magnetically doped colloidal nanoplatelets with the chemical formula CdSe/Cd1-xMn x S, explored by optically detected magnetic resonance and magneto-photoluminescence spectroscopy. The host matrix, with a quasi-type II electronic configuration, introduces a dominant interaction between a photogenerated electron and a magnetic dopant. Furthermore, the data convincingly presents the interaction between an electron and nuclear spins of the doped ions located at neighboring surroundings, with consequent influence on the carrier's spin relaxation time. The nuclear spin contribution by the magnetic dopants in colloidal nanoplatelets is considered here for the first time.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Strassberg, Rotem
Delikanli, Savas
Barak, Yahel
Dehnel, Joanna
Kostadinov, Alyssa
Maikov, Georgy
Hernandez-Martinez, Pedro Ludwig
Sharma, Manoj
Demir, Hilmi Volkan
Lifshitz, Efrat
format Article
author Strassberg, Rotem
Delikanli, Savas
Barak, Yahel
Dehnel, Joanna
Kostadinov, Alyssa
Maikov, Georgy
Hernandez-Martinez, Pedro Ludwig
Sharma, Manoj
Demir, Hilmi Volkan
Lifshitz, Efrat
author_sort Strassberg, Rotem
title Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy
title_short Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy
title_full Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy
title_fullStr Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy
title_full_unstemmed Persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy
title_sort persuasive evidence for electron-nuclear coupling in diluted magnetic colloidal nanoplatelets using optically detected magnetic resonance spectroscopy
publishDate 2020
url https://hdl.handle.net/10356/140194
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