Manipulating Anisotropic Transport and Superconductivity by Focused Ion Beam Microstructuring

1. Auflage 2020
ISBN: 978-3-030-51361-0
Verlag: Springer International Publishing

Buch, Englisch, 153 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 430 g

Reihe: Springer Theses

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 and the heavy fermion superconductor CeIrIn. 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.

Zielgruppe

Research

Autoren/Hrsg.

Bachmann, Maja D.

Fachgebiete

• Naturwissenschaften Physik Thermodynamik Festkörperphysik, Kondensierte Materie

Inhaltsverzeichnis

Introduction.- Focused Ion Beam Micro-Machining.- On the Ballistic Motion of Electrons in PdCoO.- Spatially Modulated Heavy Fermion Superconductivity in CeIrIn.- Summary and Outlook.- Appendix.