- Author
- Title
- Coherent X-ray scattering of charge order dynamics and phase separation in titanates
- Supervisors
- Co-supervisors
- Award date
- 7 February 2017
- Number of pages
- 148
- ISBN
- 978-94-028-0517-8
- Document type
- PhD thesis
- Faculty
- Faculty of Science (FNWI)
- Institute
- Van der Waals-Zeeman Institute (WZI)
- Abstract
-
Oxides of transition metals display a plethora of fundamentally interesting and potentially technologically relevant properties, including metallic, semiconducting, insulating, magnetic and superconducting behavior. The foundations for this flexibility lie in the close balance between the factors controlling the charge, orbital and spin degrees of freedom in such oxides. One characteristic of many complex oxides are phase transitions between different quantum states of matter, for example between a conducting and insulating state or between a paramagnetic and magnetically ordered state. In this thesis, we describe the experiments on the metal-insulator transition (MIT) in a family of doped titanium oxides, Er0.6Ca 0.4TiO3.
Rather than simply switching between metallic and insulating states, these systems display coexistence of these antagonistic phases, and the investigation of their interplay and dynamics lies at the heart of this thesis project. Advanced X-ray techniques, using both hard and soft X-rays - from storage ring and free electron laser sources - have been adopted and adapted to probe the phase separation occurring near the MIT in the Er0.6Ca0.4TiO3 system. - Persistent Identifier
- https://hdl.handle.net/11245.1/3e40f82e-d7a9-44ff-8113-98f10c2c2579
- Downloads
-
Thesis (complete)
Front matter
1. Introduction
2. 3d Transition metal oxides
3. Coherent X-ray scattering: Techniques, principles and instrumentation
4. Searching for dynamics of the charge order in titanates
5. Structural investigation of the phase separation in titanates
References
Appendix A: Diffraction geometry and crystallographic orientation
Appendix B: The Timepix detector
Appendix C: Characterization of the coherent properties of the XCS beam line
Summary / Samenvatting
Acknowledgments
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