Essay On Superconductors

Essay On Superconductors-65
The disorder in the electron and boson subsystem has been taken into account.It strongly modifies the superconducting properties and leads to local variations of the gap parameter and density of states.The proposed method has been verified using experimental magnetization loops measured for polycrystalline YBa 2 Cu 3 O 7-δ and Bi 1.8 Pb 0.3 Sr 1.9 Ca 2 Cu 3 O x superconductors.

Much of the research conducted at Ohio State in the area of superconductivity is performed through the Department of Materials Science and Engineering and its Center for Superconducting and Magnetic Materials (CSMM).

Work involves both fundamental science and applied science and focuses on superconducting materials and their formation, structure and magnetic and electrical properties.

In single crystals of high-temperature superconductors (HTSCs), critical current density Jc can reach up to ~10 12 A/m 2 , which is close to the values of depairing current density [2, 3].

Due to these high values, J c is usually determined by indirect methods based on magnetic measurements, rather than by direct charge transport measurement techniques.

An intermediate state, found notably in Pu-based materials whose 5f electrons are neither...

more Actinide materials play a special role in condensed matter physics, spanning behaviours of itinerant d-electron and localized 4f-electron materials.Pu Co Ga5, the first Pu-based In the frame of a project on the development of a reduced-scale-levitating rail-vehicle prototype, the performance of two different permanent magnets have been tested in linear bearings using YBa2Cu3O7−y bulk superconductors. more In the frame of a project on the development of a reduced-scale-levitating rail-vehicle prototype, the performance of two different permanent magnets have been tested in linear bearings using YBa2Cu3O7−y bulk superconductors.The levitation forces, the stiffness and the vibration damping have been measured using two different rail assemblies: one mounted with Nd Fe B magnets and another with ferrite ones.The corresponding expression (Bean's formula) is widely used to find J c from the results of magnetic measurements as The two-component model of high temperature superconductors in its real space version has been solved using Bogoliubov–de Gennes equations.The disorder in the electron and boson subsystem has been taken into account. more The two-component model of high temperature superconductors in its real space version has been solved using Bogoliubov–de Gennes equations.An intermediate state, found notably in Pu-based materials whose 5f electrons are neither fully localized nor itinerant, is particularly challenging to understand.Superconductivity appearing in some actinide materials provides clues to the nature of the 5f electrons.The exotic (probably odd parity) superconductivity in Sr_2Ru O4 is thought to be mediated by spin fluctuations arising from proximity to such a critical point.Theories for superconductivity based on such a mechanism In recent years, magnetic and transport properties of the layered perovskite Ca_2Ru O4 at ambient pressure have been reported.This compound is isostructural with the exotic superconductor Sr_2Ru O4 and with the high Tc parent compound... more In recent years, magnetic and transport properties of the layered perovskite Ca_2Ru O4 at ambient pressure have been reported.

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