Photo-induced optical activity in phase-change memory materials

We demonstrate that optical activity in amorphous isotropic thin films of pure Ge(2)Sb(2)Te(5) and N-doped Ge(2)Sb(2)Te(5)N phase-change memory materials can be induced using rapid photo crystallisation with circularly polarised laser light. The new anisotropic phase transition has been confirmed by...

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Autores principales: Borisenko, Konstantin B., Shanmugam, Janaki, Williams, Benjamin A. O., Ewart, Paul, Gholipour, Behrad, Hewak, Daniel W., Hussain, Rohanah, Jávorfi, Tamás, Siligardi, Giuliano, Kirkland, Angus I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4350098/
https://www.ncbi.nlm.nih.gov/pubmed/25740351
http://dx.doi.org/10.1038/srep08770
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author Borisenko, Konstantin B.
Shanmugam, Janaki
Williams, Benjamin A. O.
Ewart, Paul
Gholipour, Behrad
Hewak, Daniel W.
Hussain, Rohanah
Jávorfi, Tamás
Siligardi, Giuliano
Kirkland, Angus I.
author_facet Borisenko, Konstantin B.
Shanmugam, Janaki
Williams, Benjamin A. O.
Ewart, Paul
Gholipour, Behrad
Hewak, Daniel W.
Hussain, Rohanah
Jávorfi, Tamás
Siligardi, Giuliano
Kirkland, Angus I.
author_sort Borisenko, Konstantin B.
collection PubMed
description We demonstrate that optical activity in amorphous isotropic thin films of pure Ge(2)Sb(2)Te(5) and N-doped Ge(2)Sb(2)Te(5)N phase-change memory materials can be induced using rapid photo crystallisation with circularly polarised laser light. The new anisotropic phase transition has been confirmed by circular dichroism measurements. This opens up the possibility of controlled induction of optical activity at the nanosecond time scale for exploitation in a new generation of high-density optical memory, fast chiroptical switches and chiral metamaterials.
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spelling pubmed-43500982015-03-10 Photo-induced optical activity in phase-change memory materials Borisenko, Konstantin B. Shanmugam, Janaki Williams, Benjamin A. O. Ewart, Paul Gholipour, Behrad Hewak, Daniel W. Hussain, Rohanah Jávorfi, Tamás Siligardi, Giuliano Kirkland, Angus I. Sci Rep Article We demonstrate that optical activity in amorphous isotropic thin films of pure Ge(2)Sb(2)Te(5) and N-doped Ge(2)Sb(2)Te(5)N phase-change memory materials can be induced using rapid photo crystallisation with circularly polarised laser light. The new anisotropic phase transition has been confirmed by circular dichroism measurements. This opens up the possibility of controlled induction of optical activity at the nanosecond time scale for exploitation in a new generation of high-density optical memory, fast chiroptical switches and chiral metamaterials. Nature Publishing Group 2015-03-05 /pmc/articles/PMC4350098/ /pubmed/25740351 http://dx.doi.org/10.1038/srep08770 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Borisenko, Konstantin B.
Shanmugam, Janaki
Williams, Benjamin A. O.
Ewart, Paul
Gholipour, Behrad
Hewak, Daniel W.
Hussain, Rohanah
Jávorfi, Tamás
Siligardi, Giuliano
Kirkland, Angus I.
Photo-induced optical activity in phase-change memory materials
title Photo-induced optical activity in phase-change memory materials
title_full Photo-induced optical activity in phase-change memory materials
title_fullStr Photo-induced optical activity in phase-change memory materials
title_full_unstemmed Photo-induced optical activity in phase-change memory materials
title_short Photo-induced optical activity in phase-change memory materials
title_sort photo-induced optical activity in phase-change memory materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4350098/
https://www.ncbi.nlm.nih.gov/pubmed/25740351
http://dx.doi.org/10.1038/srep08770
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