Reference : Healing effect of controlled anti-electromigration on conventional and high-Tc superc...
Scientific congresses and symposiums : Unpublished conference/Abstract
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/214980
Healing effect of controlled anti-electromigration on conventional and high-Tc superconducting nanowires
English
[fr] Effet de guérison par anti-électromigration controlée dans des nanofils supraconducteurs conventionels et à haute température critique.
Baumans, Xavier mailto [Université de Liège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
Lombardo, Joseph mailto [Université de Liège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
Brisbois, Jérémy mailto [Université de Liège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
Shaw, Gorky mailto [Université de Liège - ULiège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
Zharinov, Vyacheslav [Katholieke Universiteit Leuven - KUL > Physics and Astronomy > Institute for Nanoscale Physics and Chemistry > >]
He, Ge [Chinese Academy of Science > Institute of Physics > Beijing National Laboratory for Condensed Matter Physics > >]
Yu, Heshan [Chinese Academy of Sciences > Institute of Physics > Beijing National Laboratory for Condensed Matter Physics > >]
Yuan, Jie [Chinese Academy of Sciences > Institute of Physics > Beijing National Laboratory for Condensed Matter Physics > >]
Zhu, Beivi [Chinese Academy of Sciences > Institute of Physics > Beijing National Laboratory for Condensed Matter Physics > >]
Jin, Kui [Chinese Academy of Sciences > Institute of Physics > Institute of Physics > Beijing National Laboratory for Condensed Matter Physics > >]
Kramer, Roman [Université Grenoble Alpes > Institut NEEL > > >]
Van de Vondel, Joris [Katholieke Universiteit Leuven - KUL > Physics and Astronomy > Institute for Nanoscale Physics and Chemistry > >]
Silhanek, Alejandro mailto [Université de Liège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
21-Sep-2017
No
No
International
43RD INTERNATIONAL CONFERENCE ON MICRO AND NANOENGINEERING
du 18 septembre 2017 au 22 septembre 2017
INL- International Iberian Nanotechnology Laboratory
Institute of Microelectronics of Barcelona IMB-CNM
Braga
Portugal
[en] electropulsing ; electromigration ; healing ; nanowires
[en] At the present time, electron beam lithography (EBL) is considered as the reference technique for nanoscale patterning. However, making nanostructures below the sub-10 nm scale is still challenging due to broadening effects (forward electron scattering, backscattering, electrostatic charging…), and requires strong investment in terms of cost for state-of-the-art EBL systems. In this sense, alternative methods are continuously explored in order to make such nanofabrication easily reachable.
A promising approach consists of inducing atomic diffusion by a large current density. This phenomenon, called electromigration (EM), and well known since the 60’s as a failure mechanism in metallic interconnections [1], still attracts interests from scientists and engineers for its great potential for fabrication of microstructures and for its reversibility character [2, 3].

In this work, we show that the combination of electromigration and anti-electromigration allows the precise tuning of superconducting properties of Al nanoconstrictions and we also observe the reversibility of electromigration failure for this material (see Fig. 1). The same process has been applied on Nb, leading to a more irreversible process, and La2 xCexCuO4.
For the latter material, we show that selective migration of oxygen atoms and the consequent doping modification induces a transition from a superconducting state to an insulating state in a reversible way [4].

We also discussed the possibility to enhance the electromigration technique by replacing the complex feedback control by a technique of electropulsing. These researches have direct practical impact as a method to explore the dependence of the characteristic parameters on the exact oxygen content and pave the way for a reversible control of local properties of nanowires.
Cellule d'Appui à la Recherche et à l'Enseignement en Microscopie - CAREM ; Institute for Nanoscale Physics and Chemistry - INPAC ; Institut Néel
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/214980

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