Thin film growth of Fe-based superconductors: from fundamental properties to functional devices. A comparative review

Haindl, S.; Kidszun, M.; Oswald, Steffen; Heß, Christian; Büchner, B.; Kölling, Sebastian; Wilde, L.; Thersleff, Thomas; Yurchenko, V. V.; Jourdan, Martin; Hiramatsu, Hidenori; Hosono, Hideo

doi:10.1088/0034-4885/77/4/046502

Cited by 79 publications

(82 citation statements)

References 246 publications

(299 reference statements)

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“…The energy dispersive X-ray analysis (EDX) revealed that a small amount of Ba and Ca was inter-diffused at the interface. In BaFe 2−x Co x As 2 films on oxide substrates, the similar diffusion of Ba from the film to the substrate was also reported by Haindl et al [24]. Therefore, the a-axis length was not reduced to the length of the CaF 2 substrate because the initial 122 layer deformed by the underlying CaF 2 with a Ba-partially-substituted CaF 2 .…”

Section: Substrate Materials In the Films Fabrication Of Iron-based Ssupporting

confidence: 77%

Comparative Review on Thin Film Growth of Iron-Based Superconductors

2017

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Abstract:Since the discovery of the novel iron-based superconductors, both theoretical and experimental studies have been performed intensively. Because iron-based superconductors have a smaller anisotropy than high-T c cuprates and a high superconducting transition temperature, there have been a lot of researchers working on the film fabrication of iron-based superconductors and their application. Accordingly, many novel features have been reported in the films of iron-based superconductors, for example, the fabrication of the epitaxial film with a higher T c than bulk samples, the extraction of the metastable phase which cannot be obtained by the conventional solid state reaction, and so on. In this paper, we review the progress of research on thin film fabrications of iron-based superconductors, especially the four categories: LnFeAs(O,F) (Ln = Lanthanide), AEFe 2 As 2 (AE = Alkaline-earth metal), FeCh (Ch = Chalcogen), and FeSe monolayer. Furthermore, we focus on two important topics in thin films of iron-based superconductors; one is the substrate material for thin film growth on the iron-based superconductors, and the other is the whole phase diagram in FeSe 1−x Te x which can be obtained only by using film-fabrication technique.

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Section: Substrate Materials In the Films Fabrication Of Iron-based Ssupporting

confidence: 77%

Comparative Review on Thin Film Growth of Iron-Based Superconductors

2017

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“…These defects are presumably stacking faults (i.e. missing FeAs layers)20. The reason for this defect formation (also observed on technical substrates)21 is not fully understood.…”

Section: Resultsmentioning

confidence: 99%

High field superconducting properties of Ba(Fe1−xCox)2As2 thin films

Hänisch

Iida

Kurth

et al. 2015

Sci Rep

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In general, the critical current density, Jc, of type II superconductors and its anisotropy with respect to magnetic field orientation is determined by intrinsic and extrinsic properties. The Fe-based superconductors of the ‘122’ family with their moderate electronic anisotropies and high yet accessible critical fields (Hc2 and Hirr) are a good model system to study this interplay. In this paper, we explore the vortex matter of optimally Co-doped BaFe2As2 thin films with extended planar and c-axis correlated defects. The temperature and angular dependence of the upper critical field is well explained by a two-band model in the clean limit. The dirty band scenario, however, cannot be ruled out completely. Above the irreversibility field, the flux motion is thermally activated, where the activation energy U0 is going to zero at the extrapolated zero-kelvin Hirr value. The anisotropy of the critical current density Jc is both influenced by the Hc2 anisotropy (and therefore by multi-band effects) as well as the extended planar and columnar defects present in the sample.

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“…The Fe-based superconductors have attracted a lot of attention due to their intriguing superconducting properties and their promise towards novel applications 1,2 . Among various Fe-based superconductors, the 11-system possesses the simplest structure as the anti-PbO-type structure (space group of P 4 /nmm ) 3,4 but displays the most multifarious physical properties in all Fe-based superconductors.…”

Section: Introductionmentioning

confidence: 99%

“…The fabrication of FeSe thin films has been widely studied using pulsed laser deposition (PLD) 2,6,22–27 and molecular beam epitaxy (MBE) 2,15–21,28,29 . From application point of view, PLD is much more efficient for the growth of films with moderate thickness (above 100 nm).…”

Section: Introductionmentioning

confidence: 99%

Tunable critical temperature for superconductivity in FeSe thin films by pulsed laser deposition

Feng

Yuan

et al. 2018

Sci Rep

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Stabilized FeSe thin films in ambient pressure with tunable superconducting critical temperature would be a promising candidate for superconducting electronic devices. By carefully controlling the depositions on twelve kinds of substrates using a pulsed laser deposition technique single crystalline FeSe thin films were fabricated. The high quality of the thin films was confirmed by X-ray diffraction with a full width at half maximum of 0.515° in the rocking curve and clear four-fold symmetry in φ-scan. The films have a maximum Tc ~ 15 K on the CaF2 substrate and were stable in ambient conditions air for more than half a year. Slightly tuning the stoichiometry of the FeSe targets, the superconducting critical temperature becomes adjustable below 15 K with quite narrow transition width less than 2 K. These FeSe thin films deposited on different substrates are optimized respectively. The Tc of these optimized films show a relation with the out-of-plane (c-axis) lattice parameter of the FeSe films.

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Thin film growth of Fe-based superconductors: from fundamental properties to functional devices. A comparative review

Cited by 79 publications

References 246 publications

Comparative Review on Thin Film Growth of Iron-Based Superconductors

Comparative Review on Thin Film Growth of Iron-Based Superconductors

High field superconducting properties of Ba(Fe1−xCox)2As2 thin films

Tunable critical temperature for superconductivity in FeSe thin films by pulsed laser deposition

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