100%, Zurich, Fixed-term
The Nonlinear Optics for Epitaxial Growth of Advanced Thin Films (NEAT) laboratory, part of the Institute of Multifunctional Ferroic Materials in the Materials Department, is seeking PhD candidates. Our work focuses on the epitaxial deposition of functional oxide thin films using pulsed laser deposition. We utilize in-situ diagnostic tools during the growth process to enhance the design of technologically relevant oxide thin films. Specifically, we combine state-of-the-art nonlinear optics monitoring and electron spectroscopy to investigate the dynamics of functional properties from the very first unit cell. Our research is dedicated to understanding the evolution of physical properties of epitaxial thin films in the ultrathin regime and exploring interface-related phenomena in multilayers.
Ferroelectric transition metal oxides exhibit a broad spectrum of functionalities, and in thin-film form, they present applications such as low energy-consuming electric-field-controllable non-volatile memory elements with high information density. Recent advancements in managing electrostatic and elastic boundary conditions in thin film superlattices have enabled us to manipulate physical properties at interfaces, thus allowing the design of more complex electric dipole orders like polar vortices or skyrmions. This development has significantly expanded the potential applications of ferroelectric materials.
Unlike conventional depolarizing-field tuning, our project will investigate the impact of spontaneously forming charged off-stoichiometric surface layers on the polarization state of ferroelectric thin films. We aim to pioneer the use of these charged surface layers as polarizing sheets in functional heterostructures, opening new avenues for nanoscale electrostatic control in ferroelectric thin films through lattice chemistry.
The doctoral project will explore the chemistry of the lattice, including charged off-stoichiometric layers and chemical variations in layered compounds, as a novel means to influence ferroelectric ordering. By utilizing our capability to engineer oxide thin film interfaces with atomic precision, along with advanced non-invasive optical probes of polarization in thin films, we will further investigate surface chemistry in oxide ferroelectric thin films. We will also incorporate additional structural and functional characterization tools, such as scanning probe microscopy, X-ray diffraction, and transmission electron microscopy, among others.
Our unique in-situ monitoring capabilities of polarization during growth and optical poling position this PhD project as a promising opportunity for exciting physics and groundbreaking discoveries. Collaborations with experts in electron microscopy, magnetic characterization, and nitrogen vacancy scanning electrometry will provide a multiscale approach to our research.
As part of our international NEAT research team, candidates will engage with highly motivated PhD and Master students while utilizing our facilities for thin film growth and characterization through nonlinear laser spectroscopy. They will have the opportunity to design and set up their own experiments and are encouraged to innovate and reconsider approaches as necessary. Although focused on thin-film growth experiments, candidates will likely collaborate with theoretical groups and incorporate various experimental techniques.
The NEAT laboratory offers an inspiring and collaborative environment where innovative research can flourish, situated within ETH Zurich—one of the world's leading universities in science and technology.
ETH Zurich is committed to fostering an inclusive culture. We promote equality of opportunity, value diversity, and nurture a working and learning environment where everyone's rights and dignity are respected. Visit our Equal Opportunities and Diversity website to learn more about how we ensure a fair and open environment that allows everyone to grow and thrive.
Apply online using the form below. Only applications matching the job profile will be considered.
For further information, please visit our website.
Questions regarding the position should be directed via email to Prof. Morgan Trassin at Show e-mail.ch">. Selection will commence immediately, so early submissions are encouraged.
ETH Zurich is a premier university specializing in science and technology, renowned for its exceptional education and pioneering research. More than 30,000 individuals from over 120 countries choose our university as a platform for independent thought and excellence. With its central location in Europe, ETH Zurich forms connections worldwide, striving to develop solutions for today’s global challenges.
Location : Zürich
Country : Switzerland