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A non-oxidizing fabrication method for lithographic break junctions of sensitive metals

Electrochemically active metals offer advanced functionalities with respect to the well-established gold electrode arrangements in various electronic transport experiments on atomic scale objects. Such functionalities can arise from stronger interactions with the leads which provide better coupling...

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Autores principales: Nyáry, Anna, Gubicza, Agnes, Overbeck, Jan, Pósa, László, Makk, Péter, Calame, Michel, Halbritter, András, Csontos, Miklós
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419795/
https://www.ncbi.nlm.nih.gov/pubmed/36132792
http://dx.doi.org/10.1039/d0na00498g
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author Nyáry, Anna
Gubicza, Agnes
Overbeck, Jan
Pósa, László
Makk, Péter
Calame, Michel
Halbritter, András
Csontos, Miklós
author_facet Nyáry, Anna
Gubicza, Agnes
Overbeck, Jan
Pósa, László
Makk, Péter
Calame, Michel
Halbritter, András
Csontos, Miklós
author_sort Nyáry, Anna
collection PubMed
description Electrochemically active metals offer advanced functionalities with respect to the well-established gold electrode arrangements in various electronic transport experiments on atomic scale objects. Such functionalities can arise from stronger interactions with the leads which provide better coupling to specific molecules and may also facilitate metallic filament formation in atomic switches. However, the higher reactivity of the electrode metal also imposes challenges in the fabrication and reliability of nanometer scale platforms, limiting the number of reported applications. Here we present a high-yield lithographic fabrication procedure suitable to extend the experimental toolkit with mechanically controllable break junctions of oxygen sensitive metallic electrodes. We fabricate and characterize silver break junctions exhibiting single-atomic conductance and superior mechanical and electrical stability at room temperature. As a proof-of-principle application, we demonstrate resistive switching between metastable few-atom configurations at finite voltage bias.
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spelling pubmed-94197952022-09-20 A non-oxidizing fabrication method for lithographic break junctions of sensitive metals Nyáry, Anna Gubicza, Agnes Overbeck, Jan Pósa, László Makk, Péter Calame, Michel Halbritter, András Csontos, Miklós Nanoscale Adv Chemistry Electrochemically active metals offer advanced functionalities with respect to the well-established gold electrode arrangements in various electronic transport experiments on atomic scale objects. Such functionalities can arise from stronger interactions with the leads which provide better coupling to specific molecules and may also facilitate metallic filament formation in atomic switches. However, the higher reactivity of the electrode metal also imposes challenges in the fabrication and reliability of nanometer scale platforms, limiting the number of reported applications. Here we present a high-yield lithographic fabrication procedure suitable to extend the experimental toolkit with mechanically controllable break junctions of oxygen sensitive metallic electrodes. We fabricate and characterize silver break junctions exhibiting single-atomic conductance and superior mechanical and electrical stability at room temperature. As a proof-of-principle application, we demonstrate resistive switching between metastable few-atom configurations at finite voltage bias. RSC 2020-07-24 /pmc/articles/PMC9419795/ /pubmed/36132792 http://dx.doi.org/10.1039/d0na00498g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Nyáry, Anna
Gubicza, Agnes
Overbeck, Jan
Pósa, László
Makk, Péter
Calame, Michel
Halbritter, András
Csontos, Miklós
A non-oxidizing fabrication method for lithographic break junctions of sensitive metals
title A non-oxidizing fabrication method for lithographic break junctions of sensitive metals
title_full A non-oxidizing fabrication method for lithographic break junctions of sensitive metals
title_fullStr A non-oxidizing fabrication method for lithographic break junctions of sensitive metals
title_full_unstemmed A non-oxidizing fabrication method for lithographic break junctions of sensitive metals
title_short A non-oxidizing fabrication method for lithographic break junctions of sensitive metals
title_sort non-oxidizing fabrication method for lithographic break junctions of sensitive metals
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419795/
https://www.ncbi.nlm.nih.gov/pubmed/36132792
http://dx.doi.org/10.1039/d0na00498g
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