Controlling superconductivity of CeIrIn5 microstructures by substrate selection
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.
- Authors:
-
- Ecole Polytechnique Federale Lausanne (Switzerland); Radboud Univ., Nijmegen (Netherlands)
- Max Planck Institute for Chemical Physics of Solids, Dresden (Germany); Univ. of St. Andrews, Scotland (United Kingdom)
- Ecole Polytechnique Federale Lausanne (Switzerland)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Swiss National Science Foundation (SNSF)
- OSTI Identifier:
- 1868255
- Report Number(s):
- LA-UR-21-32120
Journal ID: ISSN 0003-6951; TRN: US2306578
- Grant/Contract Number:
- 89233218CNA000001; PP00P2_176789; 206021_189675
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 120; Journal Issue: 9; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; material science; finite-element analysis; superconductivity; focused ion beam; heavy fermion superconductors
Citation Formats
van Delft, Maarten R., Bachmann, Maja Deborah, Putzke, Carsten, Guo, Chunyu, Straquadine, Joshua A.W., Bauer, Eric Dietzgen, Ronning, Filip, and Moll, Philip J. W. Controlling superconductivity of CeIrIn5 microstructures by substrate selection. United States: N. p., 2022.
Web. doi:10.1063/5.0082561.
van Delft, Maarten R., Bachmann, Maja Deborah, Putzke, Carsten, Guo, Chunyu, Straquadine, Joshua A.W., Bauer, Eric Dietzgen, Ronning, Filip, & Moll, Philip J. W. Controlling superconductivity of CeIrIn5 microstructures by substrate selection. United States. https://doi.org/10.1063/5.0082561
van Delft, Maarten R., Bachmann, Maja Deborah, Putzke, Carsten, Guo, Chunyu, Straquadine, Joshua A.W., Bauer, Eric Dietzgen, Ronning, Filip, and Moll, Philip J. W. Wed .
"Controlling superconductivity of CeIrIn5 microstructures by substrate selection". United States. https://doi.org/10.1063/5.0082561. https://www.osti.gov/servlets/purl/1868255.
@article{osti_1868255,
title = {Controlling superconductivity of CeIrIn5 microstructures by substrate selection},
author = {van Delft, Maarten R. and Bachmann, Maja Deborah and Putzke, Carsten and Guo, Chunyu and Straquadine, Joshua A.W. and Bauer, Eric Dietzgen and Ronning, Filip and Moll, Philip J. W.},
abstractNote = {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.},
doi = {10.1063/5.0082561},
journal = {Applied Physics Letters},
number = 9,
volume = 120,
place = {United States},
year = {Wed Mar 02 00:00:00 EST 2022},
month = {Wed Mar 02 00:00:00 EST 2022}
}
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