Spatially modulated heavy-fermion superconductivity in CeIrIn5

Abstract

The ability to spatially modulate the electronic properties of solids has led to landmark discoveries in condensed matter physics as well as new electronic applications. Although crystals of strongly correlated metals exhibit a diverse set of electronic ground states, few approaches to spatially modulating their properties exist. Here we demonstrate spatial control over the superconducting state in mesoscale samples of the canonical heavy-fermion superconductor CeIrIn5. We use a focused ion beam (FIB) to pattern crystals on the microscale, which tailors the strain induced by differential thermal contraction into specific areas of the device. The resulting non-uniform strain fields induce complex patterns of superconductivity due to the strong dependence of the transition temperature on the strength and direction of strain. Electrical transport and magnetic imaging of devices with different geometry show that the obtained spatial modulation of superconductivity agrees with predictions based on finite element simulations. These results present a generic approach to manipulating electronic order on micrometer length scales in strongly correlated matter.

arXiv comment29 pages, 14 figures

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• Structural investigations of CeIrIn${}_5$ and CeCoIn${}_5$ on macroscopic and atomic length scales
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• Possible quadrupole density wave in the superconducting Kondo lattice CeRh2As2
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• Resonant Ultrasound Spectroscopy for Irregularly-Shaped Samples and its Application to Uranium Ditelluride
• Giant Grüneisen parameter in a strain-tuned superconducting quantum paraelectric: A consequence of the vanishing ferroelectric phonon energy
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• Engineering Topological Models with a General-Purpose Symmetry-to-Hamiltonian Approach
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• Microstructuring YbRh2Si2 for resistance and noise measurements down to ultra-low temperatures
• Frequency-dependent sensitivity of AC elastocaloric effect measurements explored through analytical and numerical models
• Controlling superconductivity of CeIrIn${}_5$ microstructures by substrate selection
• Slow magnetic quantum oscillations in the c-axis magnetoresistance of UTe${}_2$
• Hamiltonian with Energy Levels Corresponding to Riemann Zeros
• Strain-engineered interaction of quantum polar and superconducting phases
• Sub-Phases in the Superconducting State of CeIrIn${}_5$ Revealed by Low Temperature $c$-axis Heat Transport