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  Controlling superconductivity of CeIrIn5 microstructures by substrate selection

van Delft, M. R., Bachmann, M. D., Putzke, C., Guo, C., Straquadine, J. A. W., Bauer, E. D., et al. (2022). Controlling superconductivity of CeIrIn5 microstructures by substrate selection. Applied Physics Letters, 120(9): 092601, pp. 1-5. doi:10.1063/5.0082561.

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 Creators:
van Delft, Maarten R.1, Author
Bachmann, Maja D.2, Author           
Putzke, Carsten1, Author
Guo, Chunyu1, Author
Straquadine, Joshua A. W.1, Author
Bauer, Eric D.1, Author
Ronning, Filip1, Author
Moll, Philip J. W.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: Superconductor/metal interfaces are usually fabricated in heterostructures that join these dissimilar materials. A conceptually different approach has recently exploited the strain sensitivity of heavy-fermion superconductors, selectively transforming regions of the crystal into the metallic state by strain gradients. The strain is generated by differential thermal contraction between the sample and the substrate. Here, we present an improved finite-element model that reliably predicts the superconducting transition temperature in CeIrIn5 even in complex structures. Different substrates are employed to tailor the strain field into the desired shapes. Using this approach, both highly complex and strained as well as strain-free microstructures are fabricated to validate the model. This enables a high degree of control over the microscopic strain fields and forms the basis for more advanced structuring of superconductors as in Josephson junctions yet also finds natural use cases in any material class in which a modulation of the physical properties on a chip is desirable.& nbsp; (C)& nbsp;2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http:// creativecommons.org/licenses/by/4.0/).

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Language(s): eng - English
 Dates: 2022-03-022022-03-02
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000774363700002
DOI: 10.1063/5.0082561
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Title: Applied Physics Letters
  Abbreviation : Appl. Phys. Lett.
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: - Volume / Issue: 120 (9) Sequence Number: 092601 Start / End Page: 1 - 5 Identifier: ISSN: 0003-6951
CoNE: https://pure.mpg.de/cone/journals/resource/954922836223