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

doi:10.1016/j.phpro.2017.09.037

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

Department of Applied Physics

Lawrence Berkeley National Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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Abstract

Local control of dopant profiles and ordered doping in high T_c superconductors have the potential to greatly increase the transition temperature, T_c. 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 T_c 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 language	English
Title of host publication	Conference on the Application of Accelerators in Research and Industry, CAARI 2016, 30 October – 4 November 2016, Ft. Worth, TX, USA
Publisher	Elsevier
Pages	381-384
Number of pages	4
DOIs	https://doi.org/10.1016/j.phpro.2017.09.037
Publication status	Published - 2017
MoE publication type	A4 Conference publication
Event	International Conference on the Application of Accelerators in Research and Industry - Ft. Worth, United States Duration: 30 Oct 2016 → 4 Nov 2018

Publication series

Name	Physics Procedia
Publisher	Elsevier
Volume	90
ISSN (Print)	1875-3892
ISSN (Electronic)	1875-3884

Conference

Conference	International Conference on the Application of Accelerators in Research and Industry
Abbreviated title	CAARI
Country/Territory	United States
City	Ft. Worth
Period	30/10/2016 → 04/11/2018

Keywords

doping
electron beams
high T superconductivity

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10.1016/j.phpro.2017.09.037

1-s2.0-S1875389217301967-main-1Final published version, 534 KBLicence: CC BY-NC-ND

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

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title = "Patterned Electron Beam Exposures of YBCO - Towards Local Control of Doping",

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).",

keywords = "doping, electron beams, high T superconductivity",

author = "Lake, {R. E.} and A. Mueller and H. Pan and A. Persaud and Ludewigt, {B. A.} and Kresin, {V. Z.} and Minor, {A. M.} and Seidl, {P. A.} and T. Schenkel",

year = "2017",

doi = "10.1016/j.phpro.2017.09.037",

language = "English",

series = "Physics Procedia",

publisher = "Elsevier",

pages = "381--384",

booktitle = "Conference on the Application of Accelerators in Research and Industry, CAARI 2016, 30 October – 4 November 2016, Ft. Worth, TX, USA",

address = "Netherlands",

note = "International Conference on the Application of Accelerators in Research and Industry, CAARI ; Conference date: 30-10-2016 Through 04-11-2018",

}

Lake, RE, Mueller, A, Pan, H, Persaud, A, Ludewigt, BA, Kresin, VZ, Minor, AM, Seidl, PA & 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. Physics Procedia, vol. 90, Elsevier, pp. 381-384, International Conference on the Application of Accelerators in Research and Industry, Ft. Worth, Texas, United States, 30/10/2016. https://doi.org/10.1016/j.phpro.2017.09.037

Patterned Electron Beam Exposures of YBCO - Towards Local Control of Doping. / Lake, R. E.; Mueller, A.; Pan, H. et al.
Conference on the Application of Accelerators in Research and Industry, CAARI 2016, 30 October – 4 November 2016, Ft. Worth, TX, USA. Elsevier, 2017. p. 381-384 (Physics Procedia; Vol. 90).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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T1 - Patterned Electron Beam Exposures of YBCO - Towards Local Control of Doping

AU - Lake, R. E.

AU - Mueller, A.

AU - Pan, H.

AU - Persaud, A.

AU - Ludewigt, B. A.

AU - Kresin, V. Z.

AU - Minor, A. M.

AU - Seidl, P. A.

AU - Schenkel, T.

PY - 2017

Y1 - 2017

N2 - 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).

AB - 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).

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KW - electron beams

KW - high T superconductivity

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M3 - Conference article in proceedings

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EP - 384

BT - Conference on the Application of Accelerators in Research and Industry, CAARI 2016, 30 October – 4 November 2016, Ft. Worth, TX, USA

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Y2 - 30 October 2016 through 4 November 2018

ER -

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

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Keywords

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