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

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

Researchers

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

Research units

  • Lawrence Berkeley National Laboratory

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).

Details

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
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

    Research areas

  • doping, electron beams, high T superconductivity

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