| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Krogstad, M. J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (3/3 displayed)
- 2022Unconventional short-range structural fluctuations in cuprate superconductorscitations
- 2022Enhanced superconductivity and ferroelectric quantum criticality in plastically deformed strontium titanatecitations
- 2019Acoustic phonon dispersion and diffuse scattering across the valence transition of <math><mrow><msub><mrow><mo>(</mo><mrow><mi mathvariant='normal'>P</mi><msub><mi mathvariant='normal'>r</mi><mrow><mn>0.85</mn></mrow></msub><msub><mi mathvariant='normal'>Y</mi><mrow><mn>0.15</mn></mrow></msub></mrow><mo>)</mo></mrow><mrow><mn>0.7</mn></mrow></msub><mi mathvariant='normal'>C</mi><msub><mi mathvariant='normal'>a</mi><mrow><mn>0.3</mn></mrow></msub><mi>Co</mi><msub><mi mathvariant='normal'>O</mi><mrow><mn>3</mn><mo>-</mo><mi>δ</mi></mrow></msub></mrow></math>citations
Places of action
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article
Enhanced superconductivity and ferroelectric quantum criticality in plastically deformed strontium titanate
Abstract
<p>The properties of quantum materials are commonly tuned using experimental variables such as pressure, magnetic field and doping. Here we explore a different approach using irreversible, plastic deformation of single crystals. We show that compressive plastic deformation induces low-dimensional superconductivity well above the superconducting transition temperature (T<sub>c</sub>) of undeformed SrTiO<sub>3</sub>, with evidence of possible superconducting correlations at temperatures two orders of magnitude above the bulk T<sub>c</sub>. The enhanced superconductivity is correlated with the appearance of self-organized dislocation structures, as revealed by diffuse neutron and X-ray scattering. We also observe deformation-induced signatures of quantum-critical ferroelectric fluctuations and inhomogeneous ferroelectric order using Raman scattering. Our results suggest that strain surrounding the self-organized dislocation structures induces local ferroelectricity and quantum-critical dynamics that strongly influence T<sub>c</sub>, consistent with a theory of superconductivity enhanced by soft polar fluctuations. Our results demonstrate the potential of plastic deformation and dislocation engineering for the manipulation of electronic properties of quantum materials.</p>