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 6 of 6 for “"order parameter symmetry"”.
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Conductivity and Interferometry Experiments on YBCO/lead Ramp-Edge Josephson Junctions
In this thesis, we study the details of the order parameter symmetry in arbitrary directions of the high-temperature cuprate superconductor YBa 2Cu3O7-y (YBCO) using YBCO/Pb ramp-edge Josephson junctions with lithographically defined corner and straight-edge geometries. Measurements of the critical …
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Probing the chiral domain structure and dynamics in SR2RUO4 with nanoscale Josephson junctions
… superconducting state is unconventional with an order parameter symmetry of px ipy. Measurements using Josephson Interferometry have shown evidence for chiral order parameter domains on the order of 1 m in size. To further search for signatures of these domains we have fabricated Josephson …
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Quantum phase transitions in disordered magnets
"We study the effects of quenched weak disorder on quantum phase transitions in disordered magnets. The presence of disorder in the system can lead to a variety of exotic phenomena, e.g., the smearing of transitions or quantum Griffiths singularities. Phase transitions are smeared if individual …
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Spectroscopic studies of high-temperature superconductors on planar tunnel junction devices and nanofabricated point contact junctions
… and crystals to test the superconducting gap order parameter symmetry using the proximity effect are also presented.
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Point-contact Andreev reflection studies on superconductors
… of phase-separated magnetic and superconducting orders on the mesoscopic scale is considered to explain the range of behaviors in the superconducting samples.
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Manipulating superconductivity in cuprates with selective ultrafast excitation
… targeting phonon modes of cuprate materials in order to manipulate their superconducting behavior. However, the pathway by which the light interacts with the phonon and electronic degrees of freedom is distinct in each case. First, in Chapter 4, I present a study of resonant mid-infrared …