Details
Manipulating Anisotropic Transport and Superconductivity by Focused Ion Beam Microstructuring
Springer Theses
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CHF 165.50 |
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| Verlag: | Springer |
| Format: | |
| Veröffentl.: | 28.08.2020 |
| ISBN/EAN: | 9783030513627 |
| Sprache: | englisch |
Dieses eBook enthält ein Wasserzeichen.
Beschreibungen
<p>This thesis presents pioneering work in the relatively new field of focused ion beam (FIB) sculpting of single crystals to produce bespoke devices and enable the investigation of physics that cannot be studied in bulk samples. It begins with a comprehensive and didactic account of how to achieve this sculpting, revealing the ‘tricks of the trade’ of state-of-the-art FIB microstructuring. In subsequent chapters, the author presents ground-breaking results obtained from microstructures of the delafossite oxide metal PdCoO<sub>2</sub> and the heavy fermion superconductor CeIrIn<sub>5</sub>. In these elegant, forefront experiments, a new form of directional ballistic transport in the ultra-pure delafossites is described and explained. Furthermore, a new way to spatially modulate superconductivity induced by strain is demonstrated with electrical transport measurements that agree well with predictions based on thermoelastic finite element simulations.</p>
<p>Introduction.- Focused Ion Beam Micro-Machining.- On the Ballistic Motion of Electrons in PdCoO<sub>2</sub>.- Spatially Modulated Heavy Fermion Superconductivity in CeIrIn<sub>5</sub>.- Summary and Outlook.- Appendix.</p>
<p>This thesis presents pioneering work in the relatively new field of focused ion beam (FIB) sculpting of single crystals to produce bespoke devices and enable the investigation of physics that cannot be studied in bulk samples. It begins with a comprehensive and didactic account of how to achieve this sculpting, revealing the ‘tricks of the trade’ of state-of-the-art FIB microstructuring. In subsequent chapters, the author presents ground-breaking results obtained from microstructures of the delafossite oxide metal PdCoO<sub>2</sub> and the heavy fermion superconductor CeIrIn<sub>5</sub>. In these elegant, forefront experiments, a new form of directional ballistic transport in the ultra-pure delafossites is described and explained. Furthermore, a new way to spatially modulate superconductivity induced by strain is demonstrated with electrical transport measurements that agree well with predictions based on thermoelastic finite element simulations.</p>
Nominated as an outstanding Ph.D. thesis by the University of St Andrews, Scotland Provides an in-depth description of focused ion beam (FIB) microstructuring fabrication techniques Showcases how novel transport device architectures can be tailored to answer specific research questions Describes a generic approach to spatially manipulating electronic order on a micrometer length scale
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