Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"vortex pinning"”.
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Enhancement Of Magnetic Vortex Pinning by APCs with Coherent BZO 1D-APC/YBCO Interface
Strong magnetic vortex pinning is crucial for in-field high critical current density (Jc) sustaining applications. This pinning force can be realized by inserting artificial pinning centers (APCs) in high temperature superconductors (HTS) such as YBa2Cu3O7-x (YBCO). Unfortunately, a degraded …
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Vortex distributions and dynamics in superconductors near surface steps and sample edges studied by scanning SQUID microscopy and critical current measurements
… edges. Surface steps can generate an asymmetric vortex pinning potential and can influence the distribution of vortices upon cooling into the superconducting state in an applied magnetic field. The edge of a sample acts as a barrier to vortex entry into the superconductor and can have a …
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The effects of disorder on superconducting islands and island arrays
… presented an enhanced competition between vortex pinning effects and vortex-vortex interactions due to their confined geometry and strong disorder. The Sn island arrays on graphene served as a platform to study the effects of point disorder on the magnetic field-driven …
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Some effects of dimensionality and defects on superconductivity
This thesis reports some theoretical studies of superconductivity with reduced dimensions. After an intro- duction to the physics of superconductivity with reduced dimensions, we reports our studies in three main topics in this thesis. In Chapter 2, the resistance of superconducting thin wires with …