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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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Graf, David
University of Cologne
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2024Insulator-to-Metal Transition and Isotropic Gigantic Magnetoresistance in Layered Magnetic Semiconductors.
- 2023Superconductivity and Fermi Surface Studies of β″-(BEDT-TTF)2[(H2O)(NH4)2Cr(C2O4)3]·18-Crown-6citations
- 2023Asymmetric phase diagram and dimensional crossover in a system of spin-1/2 dimers under applied hydrostatic pressurecitations
- 2022Self-supported amorphous TaNx(Oy)/nickel foam thin film as an advanced electrocatalyst for hydrogen evolution reactioncitations
- 2021Evidence of two-dimensional flat band at the surface of antiferromagnetic kagome metal FeSn
- 2019Nanostructured IrOx Coatings for Efficient Oxygen Evolution Reactions in PV-EC Setupcitations
- 2019Superconductivity in the dilute single band limit in reduced Strontium Titanate
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document
Superconductivity in the dilute single band limit in reduced Strontium Titanate
Abstract
We report on superconductivity in single crystals of SrTiO$_{3-δ}$ with carrier densities ${n} < 1.4 ^{18}cm^{-3}$, where only a single band is occupied. For all samples in this regime, the resistive transition occurs at $T_{c}6525 \ mK$. We observe a zero resistance state for ${n}$ as low as $1.03 ^{17}cm^{-3}$, and a partial resistive transition for ${n} = 3.85 ^{16}cm^{-3}$. We observe low critical current densities, relatively high and isotropic upper critical fields, and an absence of diamagnetic screening in these samples. Our findings suggest an inhomogeneous superconducting state, embedded within a homogeneous high-mobility 3-dimensional electron gas. $T_{c}$ does not vary appreciably when ${n}$ changes by more than an order of magnitude, inconsistent with conventional superconductivity.