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Molecular Beam Epitaxy Machine

this page last updated on:
February 24, 2006

Sawatzky and Damascelli - Quantum Materials Laboratory

The members of our lab (located in the AMPEL Building) are associated with the research groups lead by Prof. G.A. Sawatzky and Prof. A. Damascelli within the Department of Physics & Astronomy, and Dr. N. Ingle of AMPEL. Our research program involves the fabrication as well as the theoretical and spectroscopic study of novel complex systems and nanostructured materials. The goal is to develop new approaches and understanding in the quantum theory of solids, and define new pathways for the fabrication of materials and structures with innovative physical properties. For more details on our research activities, please visit the pages below.

Electronic Structure of Solids

The research program is concentrated on the study of the electronic structure of the strongly correlated electron systems, in bulk and ultra-thin film form. We use both high-energy (resonant and magnetic X-ray scattering) and high-resolution (photoemission and electron energy loss - EELS) spectroscopy, in combination with many-body theoretical modeling, to develop a microscopic description of the physical properties. New synchrotron based experimental techniques (such as resonant soft X-ray scattering - RSXS) are being developed at the Brookhaven National Laboratory and Canadian Light Source to study multiphase systems and nanoscale ordering phenomena.

ARPES on Complex Systems

Our research activity focuses on the study of the low-energy electronic structure and, in particular, of the interplay between the spin, charge, and orbital degrees of freedom in novel complex systems and one and two-dimensional nanostructured materials. As a main spectroscopic technique we use angle-resolved photoelectron spectroscopy (ARPES), which is one of the most powerful methods to study the electronic structure of solids. The experiments will be carried out both on the in-house ARPES system currently under development and at facilities such as the Stanford Synchrotron Radiation Laboratory, the Canadian Light Source, and Elettra, where complementary X-ray absorption studies will also be performed.

Oxide MBE

This research program is primarily concerned with the growth of novel complex oxide thin films. In particular we are interested in understanding how defects -- both point defects and extended defects such as interfaces and surfaces -- can be used to modify the electronic properties of oxides. Many-body theoretical modeling is used as a guide and inspiration to the experimental film growth, and angle-resolved photoelectron spectroscopy (ARPES) is the primariy tool for studing the electronic structure of the films.