DC superconducting quantum interference devices fabricated using bicrystal grain boundary junctions in Co-doped BaFe2As2 epitaxial films
arXiv:1005.2021 · doi:10.1088/0953-2048/23/8/082001
Abstract
DC superconducting quantum interference devices (dc-SQUIDs) were fabricated in Co-doped BaFe2As2 epitaxial films on (La, Sr)(Al, Ta)O3 bicrystal substrates with 30deg misorientation angles. The 18 x 8 micro-meter^2 SQUID loop with an estimated inductance of 13 pH contained two 3 micro-meter wide grain boundary junctions. The voltage-flux characteristics clearly exhibited periodic modulations with deltaV = 1.4 micro-volt at 14 K, while the intrinsic flux noise of dc-SQUIDs was 7.8 x 10^-5 fai0/Hz^1/2 above 20 Hz. The rather high flux noise is mainly attributed to the small voltage modulation depth which results from the superconductor-normal metal-superconductor junction nature of the bicrystal grain boundary.
References in corpus (17)
- Tc=21K in epitaxial FeSe0.5Te0.5 thin films with biaxial compressive strain
- Template engineering of Co-doped BaFe2As2 single-crystal thin films
- Weak-link behavior of grain boundaries in superconducting Ba(Fe1-xCox)2As2 bicrystals
- Unconventional London penetration depth in Ba(Fe0.93Co0.07)2As2 single crystals
- Integer and half-integer flux-quantum transitions in a niobium/iron-pnictide loop
- Strong Tc dependence for strained, epitaxial Ba(Fe1-xCox)2As2 thin films
- Superconductivity in Epitaxial Thin Films of Co-Doped SrFe2As2 with Bilayered FeAs Structures and their Magnetic Anisotropy
- Heteroepitaxial growth and optoelectronic properties of layered iron oxyarsenide, LaFeAsO
- High Critical Current Density 4 MA/cm2 in Co-Doped BaFe2As2 Epitaxial Films Grown on (La, Sr)(Al, Ta)O3 Substrates without Buffer Layers
- Epitaxial growth and anisotropy of La(O,F)FeAs thin films deposited by Pulsed Laser Deposition
- Scaling behaviour of the critical current in clean epitaxial Ba(Fe1-xCox)2As2 thin films
- Josephson junction in cobalt-doped BaFe2As2 epitaxial thin films on (La, Sr)(Al, Ta)O3 bicrystal substrates
- Atomically-flat, chemically-stable, superconducting epitaxial thin film of iron-based superconductor, cobalt-doped BaFeAs
- Epitaxial Growth of NdFeAsO Thin Films by Molecular Beam Epitaxy
- Epitaxial LaFeAsOF thin films grown by pulsed laser deposition
- Potassium-doped BaFe2As2 superconducting thin films with a transition temperature of 40 K
- In-situ fabrication of cobalt-doped SrFe2As2 thin films by using pulsed laser deposition with excimer laser
Cited by in corpus (18)
- Superconductivity in Iron Compounds
- Recent advances in iron-based superconductors toward applications
- Exploration of new superconductors and functional materials and fabrication of superconducting tapes and wires of iron pnictides
- Advantageous grain boundaries in iron pnictide superconductors
- Second-order Topological Superconductors with Mixed Pairing
- Biaxially textured cobalt-doped BaFe2As2 films with high critical current density over 1 MA/cm2 on MgO-buffered metal-tape flexible substrates
- Fe-based superconducting thin films on metallic substrates: growth, characteristics and relevant properties
- Thin Film Growth and Device Fabrication of Iron-Based Superconductors
- BaFe_{1.8}Co_{0.2}As_2 thin film hybrid Josephson junctions
- Versatile fluoride substrates for Fe-based superconducting thin films
- Thin film growth by pulsed laser deposition and properties of 122-type iron-based superconductor AE(Fe1--xCox)2As2 (AE = alkaline earth)
- Critical factor for epitaxial growth of cobalt-doped BaFe2As2 films by pulsed laser deposition
- Transport and magnetic properties of Co-doped BaFe_{2}As_{2} epitaxial thin films
- Anomalous scaling behavior in a mixed-state Hall effect of a cobalt-doped BaFe2As2 epitaxial film with a high critical current density over 1 MA/cm2
- Bicrystalline Grain Boundary and Hybrid SNS Junctions Based on Ba-122 Thin Films
- Doping and critical-temperature dependence of the energy gaps in Ba(Fe_{1-x}Co_x)_2As_2 thin films
- Quantum Waveguide Theory of the Josephson effect in Multiband Superconductors
- Analysis of interdiffusion between SmFeAsO0.92F0.08 and metals for ex situ fabrication of superconducting wire