103 citations · 1k across the 33 of their papers we have counts for
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Freestanding GdBa2Cu3O7 Thin Films via Optimized Buffer Layer Design: Preserving Superconducting Properties
Kazumasa Iida, Kai Walter, Takafumi Hatano +5
Freestanding GdBa2Cu3O7 (GdBCO) superconducting thin films were fabricated using a water-soluble Sr3Al2O6 (SAO) sacrificial layer in combination with thermal release tape. An amorp…
Best practices for a proper evaluation and conversion of physical property equations in superconductors: the examples of WHH formulation, Bean model and other cases of interest
Chiara Tarantini, Evgeny F. Talantsev, Ilaria Pallecchi +3
In recent years there have been growing concerns about the proper evaluation of physical properties of superconductors, in particular for quantities extracted from magnetic charact…
Absence of diode effect in chiral type-I superconductor NbGe2
Dong Li, Zouyouwei Lu, Wenxin Cheng +21
Symmetry elegantly governs the fundamental properties and derived functionalities of condensed matter. For instance, realizing the superconducting diode effect (SDE) demands breaki…
Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te)
Kazumasa Iida, Yoshihiro Yamauchi, Takafumi Hatano +10
Understanding the nature of grain boundaries is a prerequisite for fabricating high-performance superconducting bulks and wires. For iron-based superconductors [e.g. Ba(Fe,Co)A…
A disorder-sensitive emergent vortex phase identified in high-Tc superconductor (Li,Fe)OHFeSe
Dong Li, Peipei Shen, Jinpeng Tian +14
The magneto-transport properties are systematically measured under c-direction fields up to 33 T for a series of single-crystal films of intercalated iron-selenide superconductor (…
Inter- to Intra-Layer Resistivity Anisotropy of NdFeAs(O,H) with Various Hydrogen Concentrations
M. Chen, K. Iida, K. Kondo +3
With molecular beam epitaxy and topotactic chemical reaction, we prepared NdFeAs(O,H) epitaxial thin films with various hydrogen concentrations on 5° vicinal cut MgO substrates. By…
Nanoscale Texture and Microstructure in NdFeAs(O,F)/IBAD-MgO Superconducting Thin Film with Superior Critical Current Properties
Zimeng Guo, Hongye Gao, Keisuke Kondo +5
This paper reports the nanoscale texture and microstructure of a high-performance NdFeAs(O,F) superconducting thin film grown by molecular beam epitaxy on a textured MgO/YO…
Grain boundary characteristics of Fe-based superconductors
Kazumasa Iida, Jens Hänisch, Akiyasu Yamamoto
Understanding the nature of grain boundary (GB) characteristics in combination with creating low-energy GBs by modifying the processing conditions, so-called GB engineering, is of…
Vortex glass-liquid transition and activated flux motion in an epitaxial, super-conducting NdFeAs(O,F) thin film
J. Hänisch, K. Iida, T. Ohmura +6
An epitaxial NdFeAs(O,F) thin film of 90 nm thickness grown by molecular beam epitaxy on MgO single crystal with Tc = 44.2 K has been investigated regarding a possible vortex glass…
Novel method to study strain effect of thin films using a piezoelectric-based device and a flexible metallic substrate
Kazumasa Iida, Yuwa Sugimoto, Takafumi Hatano +5
For applying tensile or compressive uniaxial strain to functional thin films, we propose a novel approach in combining a piezoelectric-based device and a technical metallic substra…
Fe-based superconducting thin films on metallic substrates: growth, characteristics and relevant properties
Kazumasa Iida, Jens Hänisch, Chiara Tarantini
The discovery of Fe-based superconductors (FBS) as the second class of high-temperature superconducting transition (high-Tc) materials after the cuprates generated a significant im…
Selective mass enhancement close to the quantum critical point in BaFe(AsP)
V. Grinenko, K. Iida, F. Kurth +16
A quantum critical point (QCP) is currently being conjectured for the BaFe(AsP) system at the critical value 0.3. In the proximity of a QCP,…
High-field transport properties of a P-doped BaFe2As2 film on technical substrate
Kazumasa Iida, Hikaru Sato, Chiara Tarantini +5
High temperature (high-Tc) superconductors like cuprates have superior critical current properties in magnetic fields over other superconductors. However, superconducting wires for…
Superconducting properties of Ba(Fe1-xNix)2As2 thin films in high magnetic fields
Stefan Richter, Fritz Kurth, Kazumasa Iida +9
We report on electrical transport properties of epitaxial Ba(Fe1-xNix)2As2 thin films grown by pulsed laser deposition in static magnetic fields up to 35 T. The thin film shows a c…
Intrinsic and extrinsic pinning in NdFeAs(O,F): vortex trapping and lock-in by the layered structure
C. Tarantini, K. Iida, J. Haenisch +10
The Fe-based superconductors (FBS) present a large variety of compounds whose properties are affected to different extents by their crystal structures. Amongst them, the F…
Hall-plot of the phase diagram for Ba(Fe1-xCox)2As2
Kazumasa Iida, Vadim Grinenko, Fritz Kurth +16
The Hall effect is a powerful tool for investigating carrier type and density. For single-band materials, the Hall coefficient is traditionally expressed simply by …
Unusually high critical current of clean P-doped BaFe2As2 single crystalline thin film
F. Kurth, C. Tarantini, V. Grinenko +12
Microstructura lly clean, isov alently P-doped BaFe2As2 (Ba-122) single crystalline thin films have been prepared on MgO (001) substrates by molecular beam epitaxy. These films sho…
Highly textured oxypnictide superconducting thin films on metal substrates
Kazumasa Iida, Fritz Kurth, Masashi Chihara +9
Highly textured NdFeAs(O,F) thin films have been grown on ion beam assisted deposition (IBAD)-MgO/Y2O3/Hastelloy substrates by molecular beam epitaxy. The oxypnictide coated conduc…
One-dimensional pinning behavior in Co-doped BaFe2As2 thin films
V. Mishev, W. Seeböck, M. Eisterer +5
Angle-resolved transport measurements revealed that planar defects dominate flux pinning in the investigated Co-doped BaFe2As2 thin film. For any given field and temperature, the c…
Strain induced superconductivity in the parent compound BaFe2As2
J. Engelmann, V. Grinenko, P. Chekhonin +10
The discovery of superconductivity (SC) with a transition temperature, Tc, up to 65K in single-layer FeSe (bulk Tc =8K) films grown on SrTiO3 substrates has attracted special atten…
The Effect of 45° Grain Boundaries and associated Fe particles on Jc and resistivity in Ba(Fe0.9Co0.1)2As2 Thin Films
J. Hänisch, K. Iida, F. Kurth +6
The anisotropy of the critical current density Jc depends in general on both the properties of the flux lines (such as line tension, coherence length and penetration depth) and the…
Oxypnictide SmFeAs(O,F) superconductor: a candidate for high-field magnet applications
Kazumasa Iida, Jens Haenisch, Chiara Tarantini +10
The recently discovered oxypnictide superconductor SmFeAs(O,F) is the most attractive material among the Fe-based superconductors due to its highest transition temperature of 56 K…
BaFe2As2/Fe bilayers with [001]-tilt grain boundary on MgO and SrTiO3 bicrystal substrates
Kazumasa Iida, Silvia Haindl, Fritz Kurth +3
Co-doped BaFe2As2 (Ba-122) can be realized on both MgO and SrTiO3 bicrystal substrates with [001]-tilt grain boundary by employing Fe buffer layers. However, an additional spinel (…
Highly responsive Y-Ba-Cu-O thin film THz detectors with picosecond time resolution
P. Thoma, J. Raasch, A. Scheuring +11
High-temperature superconducting YBa2Cu3O7-d (YBCO) thin-film detectors with improved responsivities were developed for fast time-domain measurements in the THz frequency range. YB…