Surface Science Group
Department of Physics and Astronomy

 

We operate a wide range of thin-film growth and surface characterization instruments.

Our primary characterization tool is LSU's
J. Bennett Johnston, Sr. Center for Advanced Microstructures and Devices. CAMD is a 1.5 GeV electron storage ring and is our primary source for synchrotron radiation studies of surfaces.


CAMD before the trailers came.

Roger and Rich with the EMA on the PGM beamline
Thin Film Growth

We grow films with a range of techniques, all conducted in uhv-compatible deposition side chambers with in situ transfer to analysis chambers.

  • molecular-beam epitaxy is performed with e-beam heated wire evaporators that we design and construct in our laboratory
  • plasma deposition is performed with magnetron guns and can be conducted in a reactive environment
  • pulsed laser deposition allows us to deposit multicomponent materials with the same stoichiometry as the target. We use this for oxides and alloys.
Characterization
  • Ellipsoidal-Mirror Analyzer allows us to image photoelectron angular distributions while retaining all polarization dependent information. This is particularly valuable in dichroism (MLD and MCD) studies of electronic structure
  • Angle-Resolved Photoemission with Spin Detection
  • is performed with a miniature-Mott spin detector coupled to a 50 mm hemispherical analyzer mounted on a two-axis goniometer.

  • Scanning Tunneling Microscopy (STM/AFM)
  • We are currently working to upgrade our STM facilities.

  • Magneto-Optical Kerr Effect (MOKE)
  • is presently conducted ex-situ in an automated set-up to characterize magnetic properties of our films.


Reggie making XPS measurements on magnetite films

In addition to these primary tools, we have a complete surface characterization laboratory including LEED, ESDIAD, Auger, XPS, UPS, RHEED, MOKE and all the typical surface preparation tools.