Electrical conduction mechanisms of metal / high-Tc superconductor (YBCO) interfaces.

07:00 EST 14th January 2020 | BioPortfolio

Summary of "Electrical conduction mechanisms of metal / high-Tc superconductor (YBCO) interfaces."

Current-voltage characteristics of Au / YBaCuOinterfaces (Au/YBCO), built on optimally-doped YBCO thin films, grown by pulsed laser deposition, were measured as a function of temperature in the 50 K to 270 K range, for two different resistance states. A non-trivial equivalent circuit model is proposed, which reveals the existence of a highly inhomogeneous scenario composed by two complex layers: one presenting both a non-linear Poole-Frenkel conduction as well as Variable Range Hopping localization effects (probably associated with YBaCuO) mixed with a minor metallic phase, while the other is also composed by a mixture of YBCO with different oxygen contents, where a metallic ohmic phase still percolates. A microscopic description of the effects produced by the resistance switching is given, showing the evolution of carrier traps, localization effects and dielectric behavior for each state. The dielectric behavior is interpreted in terms of a Maxwell-Wagner scenario.


Journal Details

This article was published in the following journal.

Name: Journal of physics. Condensed matter : an Institute of Physics journal
ISSN: 1361-648X


DeepDyve research library

PubMed Articles [24123 Associated PubMed Articles listed on BioPortfolio]

Clean Interface Contact Using ZnO Interlayer for Low-Contact-Resistance MoS Transistors.

Two-dimensional transition metal dichalcogenides (TMDCs) have emerged as promising materials for next-generation electronics due to their excellent semiconducting properties. However, high contact res...

Improved thermoelectric properties of Re substituted HMS by inducing phonon scattering and energy filtering effect at grain boundary interfaces.

In this study, the effect of grain boundary interfaces on transport properties of Re substituted higher manganese silicide Mn30.4Re6Si63.6 has been investigated. The efficiency of electrical energy co...

Interfacial-Redox-Induced Tuning of Superconductivity in YBaCuO.

Solid state ionic approaches for modifying ion distributions in getter/oxide heterostructures offer exciting potentials to control material properties. Here we report a simple, scalable approach allow...

Ultralow Thermal Conductivity and Thermal diffusivity of Graphene/metal Heterostructures Through Scarcity of Low-energy Modes in Graphene.

In many ultralow thermal conductivity materials, interfaces of dissimilar materials are employed to impede heat flow perpendicular to the interfaces. However, when packed within a distance comparable ...

Effect of Al2O3 Seed-Layer on the Dielectric and Electrical Properties of Ultrathin MgO Films Fabricated using In Situ Atomic Layer Deposition.

Metal/insulator/metal (M/I/M) trilayers of Al/MgO/Al with ultrathin MgO in the thickness range of 2.20-4.40 nm were fabricated using in vacuo sputtering and atomic layer deposition (ALD). In order to ...

Clinical Trials [7748 Associated Clinical Trials listed on BioPortfolio]

Electrical Activation Mapping Guided Tailor Made Approach for Cardiac Resynchronization Therapy

Background Cardiac Resynchronization Therapy (CRT) is proven to improve survival and heart function of patient with certain electrical conduction abnormality and heart failure. However, i...

Mechanisms and Innovations in Cardiac Resynchronisation Therapy

The aim of this study is to compare the effectiveness of multiple modalities of cardiac resynchronisation therapy using high precision acute electrical and haemodynamic measurements.These ...

Nerve Conduction Block Using Transcutaneous Electrical Currents

The purpose of this study is to determine whether the transcutaneous application of unmodulated high frequency alternating currents could produce a quickly conduction block of peripheral n...

Characterising the Stable and Dynamic Left Atrial Substrate in Atrial Fibrillation

Atrial fibrillation (AF) is the most common sustained arrhythmia, with increasing prevalence associated with an ageing population. Management is challenging, and invasive catheter ablation...

Metallosis on Tissues and Serum Metal Levels in Children

Slightly elevated blood metal levels have been found in adults undergoing hip and knee replacement. It is unknown whether pediatric patients with metal implant(plates/screws/rods) have ele...

Medical and Biotech [MESH] Definitions

Diseases characterized by pathological irregularities in the HEART CONDUCTION SYSTEM. They may be associated with other heart diseases and syndromes (e.g., BRUGADA SYNDROME; NEUROMUSCULAR DISEASE, HEART BLOCKS), isolated or may result from injuries. You can have a conduction disorder without having an arrhythmia, but some arrhythmias arise from conduction disorders. OMIM: 601144.

Transmission of sound waves through vibration of bones in the SKULL to the inner ear (COCHLEA). By using bone conduction stimulation and by bypassing any OUTER EAR or MIDDLE EAR abnormalities, hearing thresholds of the cochlea can be determined. Bone conduction hearing differs from normal hearing which is based on air conduction stimulation via the EAR CANAL and the TYMPANIC MEMBRANE.

Rapid, irregular atrial contractions caused by a block of electrical impulse conduction in the right atrium and a reentrant wave front traveling up the inter-atrial septum and down the right atrial free wall or vice versa. Unlike ATRIAL FIBRILLATION which is caused by abnormal impulse generation, typical atrial flutter is caused by abnormal impulse conduction. As in atrial fibrillation, patients with atrial flutter cannot effectively pump blood into the lower chambers of the heart (HEART VENTRICLES).

Impaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the SINOATRIAL NODE and the right atrium (SA block) or between atria and ventricles (AV block). Heart blocks can be classified by the duration, frequency, or completeness of conduction block. Reversibility depends on the degree of structural or functional defects.

Supramolecular networks that consist of ordered arrangements of organic electron donor linkers (usually ditopic or polytopic organic carboxylates) and metal cations. They can have an extremely high surface area and adjustable pore size that allows for the insertion of other molecules capable of various functions such as catalysis, capture of carbon dioxide, and drug delivery.

Quick Search

DeepDyve research library

Searches Linking to this Article