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Tutorial QN07—Quantum Phenomena in Oxide Materials

Apr 22, 2019
08:30 AM - 12:00 PM
PCC North, 100 Level, Room 127 C

Quantum phenomenon is at the heart of current condensed-matter physics and materials science. Quantum oxide materials are one of the promising candidates to study quantum phenomena, owing to the strong coupling between various degrees of freedom. With more recent attention being paid to the topological state of matter, it is important to understand how this state influences different physical properties of oxides and how it is coupled to the conventional degrees of freedom in oxides.

In this tutorial, we will cover various aspects of quantum behavior of oxides. The tutorial will focus on the transport properties and electronic structures of quantum oxide materials, and novel imaging techniques and theoretical approaches for characterization of the materials.

8:30 am—Electrical and Thermal Transport Properties of Quantum Materials (From Basics to Dirac and Oxide Systems)

Benoît FauquéÉcole Supérieure de Physique et de Chimie Industrielles

In this tutorial, I will give an introduction to the electrical and thermoelectric transport in solids. After an introduction on their experimental implementation, I will show how these properties can be used to characterize the electronic ground states of the matter. I will particularly focus on the effect of a magnetic field on semimetals, which allows you to determine the Fermi surfaces (by the study of quantum oscillations) and can even generate new electronic state of the matter.

10:30 am—Electronic Structure of Quantum Oxides (Angle- and Spin-Resolved Photoemission)
Phil King, University of St. Andrews

Angle-resolved photoemission spectroscopy (ARPES) is arguably one of the most direct momentum-resolved probes of the electronic structure of solids and their surfaces. The spectral function measured by ARPES encodes information on the many-body interactions of importance to determining a material’s properties, and, with recent developments in spin-resolved detection, can now additionally yield key insights on the momentum-resolved spin-polarisation of electronic states. As such, ARPES has proved a powerful probe of the quantum many-body states and phases of oxide quantum materials. In this tutorial, we will cover the basics of ARPES and its operation, and review some recent key results from surface and interface studies of oxide crystals and thin films.

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