Penn State Science
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Current Research


Condensed Matter Physics

Electronic and magnetic properties of materials deposited on crystalline surfaces in ultra-high vacuum. The Crystalline surface is a template for two-dimensional arrays of quantum dots and ultra thin films.

Our tools are:

1. Momentum and energy-space photoelectron spectroscopy using uv synchrotron radiation.

2. Atomic core-level magnetic dichroism using x-ray synchrotron radiation.

3. Very-high resolution Fermi surface studies using synchrotron undulator radiation.

4. In-situ uhv growth, using MBE and characterization, using surface science techniques, of ultrathin-film, novel electronic and magnetic materials.

5. Magneto-optical behavior and spin transport processes in magnetic alloys and finite-size nanostructures.

6. Scanning-probe microscopy and spectroscopy of stongly-correlated electronic effects due to narrow bands at semi-conductor surfaces and interfaces.

7. STM tip-induced physical processes: tunneling; electronic and vibronic excitations; light-emission; surface and molecular modification.

8. Electron spin injection and transport using ballistic electron emission (BEE).

9. Molecular electronics in carbon nanostructures: buckey balls; nanotubes; graphene molecules.

This research area provides opportunities for undergraduate research.


2001 · All
K. N. Altmann, N. A. Janke-Gilman, J. Hayoz, R. F. Willis and F. J. Himpsel, "Effect of Magnetic Doping on the Electronic States of Ni," Phys. Rev. Lett. 87, 137201 (2001)
R. F. Willis : Research