Patterned Electron Beam Exposures of YBCO - Towards Local Control of Doping

R. E. Lake, A. Mueller, H. Pan, A. Persaud, B. A. Ludewigt, V. Z. Kresin, A. M. Minor, P. A. Seidl, T. Schenkel*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Abstract

Local control of dopant profiles and ordered doping in high Tc superconductors have the potential to greatly increase the transition temperature, Tc. We report on experiments where we used focused electron beams to locally modulate the oxygen dopant concentration in commercial YBCO films (100 nm on LaAlO3). Patterned exposure of YBCO samples to 10 keV electrons and fluences in the 1020 e-/cm2 range led to increases of Tc of ∼0.4 K, comparable to earlier reports from broad beam exposures in a similar fluence regime. We discuss our results in relation to concepts of local oxygen depletion and chain ordering induced by ionizing radiation and outline possible processing paths to implement a form of modulation doping in YBCO by patterning with intense, short excitation pulses (e. g. of MeV protons).

Original languageEnglish
Title of host publicationConference on the Application of Accelerators in Research and Industry, CAARI 2016, 30 October – 4 November 2016, Ft. Worth, TX, USA
PublisherElsevier
Pages381-384
Number of pages4
DOIs
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
EventInternational Conference on the Application of Accelerators in Research and Industry - Ft. Worth, United States
Duration: 30 Oct 20164 Nov 2018

Publication series

NamePhysics Procedia
PublisherElsevier
Volume90
ISSN (Print)1875-3892
ISSN (Electronic)1875-3884

Conference

ConferenceInternational Conference on the Application of Accelerators in Research and Industry
Abbreviated titleCAARI
CountryUnited States
CityFt. Worth
Period30/10/201604/11/2018

Keywords

  • doping
  • electron beams
  • high T superconductivity

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    Lake, R. E., Mueller, A., Pan, H., Persaud, A., Ludewigt, B. A., Kresin, V. Z., ... Schenkel, T. (2017). Patterned Electron Beam Exposures of YBCO - Towards Local Control of Doping. In Conference on the Application of Accelerators in Research and Industry, CAARI 2016, 30 October – 4 November 2016, Ft. Worth, TX, USA (pp. 381-384). (Physics Procedia; Vol. 90). Elsevier. https://doi.org/10.1016/j.phpro.2017.09.037