| 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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Adhikari, Rajdeep
European Commission
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023Phase purity and surface morphology of high-Jc superconducting Bi2Sr2Ca1Cu2O8+δ thin filmscitations
- 2023Ultrafast Coherent THz Lattice Dynamics Coupled to Spins in the van der Waals Antiferromagnet FePS3citations
- 2023Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO3 Thin Films Studied by Emission Mössbauer Spectroscopy
- 2023Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO3 Thin Films Studied by Emission Mössbauer Spectroscopy
- 2023Applied Surface Science / Phase purity and surface morphology of high-Jc superconducting Bi2Sr2Ca1Cu2O8+δ thin filmscitations
- 2023Ultrafast coherent THz lattice dynamics coupled to spins in the van der Waals antiferromagnet FePS3citations
- 2023Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO$_3$ Thin Films Studied by Emission Mössbauer Spectroscopy
- 2022Unusual charge states and lattice sites of Fe in Al x Ga1-x N:Mncitations
- 2022Effect of Impurity Scattering on Percolation of Bosonic Islands and Superconductivity in Fe Implanted NbN Thin Filmscitations
- 2022Ultrafast coherent THz lattice dynamics coupled to spins in the van der Waals antiferromagnet FePS3
- 2021Direct-ARPES and STM investigation of FeSe thin film growth by Nd:YAG lasercitations
- 2021Direct-ARPES and STM Investigation of FeSe Thin Film Growth by Nd:YAG Lasercitations
Places of action
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article
Phase purity and surface morphology of high-Jc superconducting Bi2Sr2Ca1Cu2O8+δ thin films
Abstract
Bi<sub>2</sub>Sr<sub>2</sub>Ca<sub>1</sub>Cu<sub>2</sub>O<sub>8+δ</sub> (Bi-2212) thin films with thicknesses less than 50 nm (<20 unit cells) are grown by pulsed laser deposition (PLD) onto (001) LaAlO<sub>3</sub> (LAO) single crystal substrates. Phase-pure and smooth c-axis oriented Bi-2212 films with optimal oxygen doping, critical temperature <i>T</i><sub>c0</sub> up to 86 K, and critical current density <i>J</i><sub>c</sub>(60 K) above 1 MA/cm<sup>2</sup> are obtained for samples that are annealed in situ at temperatures below 700 °C. At higher temperature Bi-2212 films on LAO substrates partially decompose to non-superconducting impurity<br/>phases, while films on MgO and SrTiO<sub>3</sub> substrates are stable. The broadening Δ<i>T</i><sub>c</sub> of the metal-to-superconductor resistive phase transition in magnetic fields is much larger for thin films of Bi-2212 as compared to YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>. The magnetic field-induced suppression of <i>T</i><sub>c0</sub> is stronger for Bi-2212 films containing impurity phases as compared to the phase-pure Bi-2212 films. The degradation of LAO substrate crystals after several steps of deposition and chemical removal of the Bi-2212 layer is investigated. New, commercially prepared substrates<br/>provide Bi-2212 films with smallest surface roughness (3 nm) and strong out-of-plane texture. However, thin films of almost the same quality are obtained on re-used LAO substrates that are mechanically polished after the chemical etching.