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Showing 1 to 20 of 22 for “"high Tc superconductors"”.
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Melt processing of Thallium-based high Tc superconductors
Includes bibliographical references.
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Light scattering studies of heavy fermion and high Tc superconductors
… diverse excitation spectra of heavy fermion and high T c superconductors. Our studies of heavy fermion compounds principally demonstrate the efficacy of using light scattering techniques to probe spin fluctuations and crystal field excitations in metals. For example, light scattering from spin …
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The defect structure and transport properties of some high Tc superconductors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1991.
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Texture development of high-Tc superconductors by application of a high magnetic field
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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New features in the phase diagrams of the cuprate high-Tc superconductors mapped using strong magnetic fields
… features in the phase diagrams of the cuprate high-Tc superconductors using high magnetic field electrical transport measurements. These discoveries attempt to address two central questions pertaining to how the physics of the cuprate high-Tc superconductors evolve as a function of both …
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Feasibility of superconductivity in semiconductor superlatices
… the layered electron and hole reservoirs of high transition temperature (high-Tc) superconductors. A GaAs-A1xGa1-xAs semiconductor structure is proposed which is predicted to superconduct at Tc = 2.0 K and may be analogous to the layered electronic structure of high-Tc superconductors. …
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Composition dependence of superconductivity in YBa₂(Cu<sub>1-x</sub>A<sub>x</sub>)₃O<sub>6+δ</sub> system with A = Zn, Ni
… (with A = Ni and Zn) for Cu are presented in the high Tc superconductors, YBa₂(Cu<sub>1 - x</sub>A<sub>x</sub>)₃O<sub>6 + δ</sub> where x < 0.03 for Zn and x< 0.10 for Ni. We have observed that the superconducting temperature in the high Tc YBa₂Cu₃O<sub>6 + δ</sub> as system decreases if copper is …
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Applications of High-Intensity Ultrasound for Synthesis and Modification of Advanced Materials
"Applications of superconductors are determined by the critical current density, above which a superconductor becomes resistive and dissipates energy. To increase the critical value, small defects are introduced into the superconductor's bulk (""pinning""). Ultrasonic irradiation of alkane slurries …
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Probing nano-scale atomic and electronic structures of iron-based superconductors
The discovery of iron-based high-Tc superconductors has attracted renewed interests in unconventional superconductivity after the intense research in the past two decades on cuprates. Similar to the cuprate superconductors, the iron-based superconductors exhibit high Tc that the …
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Flux Pumping for High-Tc Superconducting (HTS) Magnets
High Tc superconductors are enabling in the generation of extremely high magnetic fields. Flux pumping is a promising technology which can be used to operate HTS magnets without significant loss. In this decade, several HTS flux pumps based on travelling magnetic waves have been developed, yet …
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Dynamic Resistance of High-Tc Superconductor and Its Application in Flux Pumped Superconducting Magnets
High temperature superconductors are ideal materials for use in extra high magnetic fields owing to their capability of transporting high-density DC current with little power loss. Hence, superconducting magnets are already widely used in areas such as magnetic resonance imaging (MRI), particle …
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Variational study of strongly correlated electronic models
The discovery of high-Tc superconductivity in the cuprates, and the observation that strong correlations are important in connection with these compounds has led to a tremendous interest in understanding the physics of strongly correlated electronic models. In particular the two simplest models for …
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The Study of Transition Metal Oxides using Dynamical Mean Field Theory
… study of muon spin relaxation measurements in high-Tc superconductors.
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Density Matrix Renormalization Group Studies of Strongly Correlated Systems in Low Dimensions
… many materials with layered structure like the high-Tc superconductors can be approximated by the two dimensional lattice, and some models can be simplified or transformed into lower dimensions without losing information under certain situations. Here we have studied models of the electron …
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YBa2Cu3O7-x thin films prepared by Chemical Solution Deposition
… research. Potential applications of high Tc-superconductors require large critical currents and high-applied magnetic fields. Effective ways to increase the critical current density at high magnetic fields in YBCO are the introduction of nanoparticles and chemical substitution of …
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Advances And Applications Of Static And Dynamic Correlation Methods In Ab-Initio Quantum Chemistry
… chemists is the strongly correlated systems. High Tc superconductors, nanotubes, graphene sheets, transition metal complexes and photosynthetic materials all fall under this category. These systems are too large to be treated by traditional quantum chemical methods. Another reason why such …
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A Study of Narrowband Noise Characteristics Associated with Vortex Motion in High Temperature Superconductors
… an important role in the transport properties of high Tc superconductors. In the presence of a sufficiently large applied current vortices will drift creating an ohmic resistance in the material, while defects in the material will tend to inhibit their motion. Some types of material defects are …
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