Carnegie Mellon STM / MBE Group

This Web page contains links to activities in the research group of Prof. Randall Feenstra in the Physics Department at Carnegie Mellon University.

• Present Group Members:

  • Patrick Fisher (postdoc), pjfisher@andrew.cmu.edu
  • Sandeep Gaan (graduate student), sgaan@andrew.cmu.edu
  • Shu Nie (graduate student), snie@andrew.cmu.edu

  Group photo (April, 2003)

• Past Group Members:

  • Ashutosh (now at Intel, Oregon)
  • Huajie Chen (now at IBM, Fishkill)
  • Costel Constantin (now at Seton Hall University)
  • Yang Dong (now at Seagate Technology)
  • Rachel Goldman (now at University of Michigan)
  • Bruno Grandidier (now at ISEN, Lille, France)
  • Chae-Deok Lee (now at Raytheon, Boston)
  • Art Smith (now at Ohio University)
  • Hugh McKay (now at IMRA America)
  • Vidhya Ramachandran (now at IBM, Burlington)

• Description of Research Projects

  • Scanning Tunneling Microscopy
  • Molecular Beam Epitaxy
  • DURINT Nanoporous SiC and GaN

• Posted Software

  • SEMITIP, VERSION 1 a Poisson solver to evaluate the potential distribution around a probe tip in proximity to a semiconductor surface.
  • SEMITIP, VERSION 2. Incorporates a number of improvements relative to VERSION 1, and in particular permits the inclusion of a distribution of surface states.

• Picture Gallery

  • Dislocation intersecting the surface of GaN(0001), illustrating spiral growth mode. Image appeared on the cover of the 14 August 1998 issue of Science. (Same image in blue or red.) Original version of image appeared in J. Vac. Sci. Technol.
  • Surface domain boundary on Si(111)2x1.
  • STM image of the GaAs(110) surface. Gallium atoms (empty states) are pictured in green, and arsenic atoms (filled states) are shown in red.
  • Defect on GaAs(110). GaAs(110) #1. GaAs(110) #2.
  • Si(111)5x5 #1. Si(111)5x5 #2. Si(111)5x5 #3. Si(111)5x5 #4. Si(111)7x7.

• Preprints of Publications

  Click here for a list of abstracts and preprints of all of the group's publications.

• Carnegie Mellon Physics Department

  Departmental WWW page and information server

• Acknowledgements

  We are grateful to the National Science Foundation and the Office of Naval Research for supporting the research activities described above.