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X-ray seminar

Seminarium Rentgenowskie Online

Fabrication of micro and nanostructures from crystals of topological insulators

14-03-2023 10:30 - 11:30
Venue
Instytut Fizyki PAN, Warszawa
Email
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Speaker
mgr Krzysztof Maćkosz
Affiliation
Akademia Górniczo-Hutnicza w Krakowie

Bismuth chalcogenides belong to the group of materials that can make future electronic devices far more powerful than today. However, nanostructurization of those materials is still a challenging process, as the quality of the structure surface will affect the material behavior. Our research is centered on defects induced in chalcogenides (Bi2Se3 and Bi2Te3) by the structurization process using Focused Ion Beams, by means of XAS, TEM and magnetoresistance studies. The fundamental goal of the study is to optimize the parameters of lithography processes (beam current, kinetic energy of ions, time of exposure, etc.) in order to keep the minimal desired size and shape of the nanostructures and preserve topological insulators properties by minimizing the damage in the surface states induced by the impinging ions.

 
 

List of Dates (Page event details)

  • 14-03-2023 10:30 - 11:30
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