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LOMA home > Research topics

Research topics

	Self-Assembly
	Misfit Dislocations
	Ag dislocation network
	Surface Alloys
	Dislocation Half-Loops in Au(100)

Research topics at LOMA

Here we provide a bried introduction to some of the research lines at LOMA. The research lines at the LOMA comprise both specific work done at the lab, and collaborations both with the CMAM (Center for Microanalysis of Materials), the surface physics group at the UAM (LASUAM) and with groups with Low Energy Electron Microscopes (K. F. McCarty at Sandia National Labs and A. K. Schmid at Berkeley Nationa Lab).This group was started at the end of 2002, and the equipment is getting ready to run.

The main theme of the research at LOMA is basic studies of material science on thin films and surfaces. We perform mostly structural studies, and put strong emphasis on getting an understanding of dynamics at both surfaces and thin films. To such end, we employ both a Scanning Tunneling Microscope which is home-built, and Low Energy Electron Microscopes through collaborations (and hopefully with an instrument that has been requested through the Universidad Autonoma de Madrid)

Electron reflectivity measurements of Ag adatom concentrations on W(110)

We can use electron reflectivity at low energies (5eV) as a precise probe on adatom densities. Through its use, it is easy to determine the phase diagram of 2d-adatom gas and condensed islands. [More]

Leed pattern from a single terrace!

Is the hcp(0001) surface three-fold symmetric or six-fold? With LEEM we directly adquire the diffraction pattern from a single terrace, which is three-fold. Averaging over multiple terraces gives the commonly observed six-fold pattern. To see more, go to http://www.arxiv.org/abs/cond-mat/0601475 [More]

SPLEEM image with arrows indicating the magnetization direction of 1 and 2 MLCo/Ru surface

We found two spin-reorientation transitions in the first three atomic layers of Co grown layer by layer on Ru(0001). [More]

Science 308, p1303

Our work "The Importance of Threading Dislocations on the Motion of Domain Boundaries in Thin Films" is published in Science 308, 1303 (27 May 2005) [More]

STM gets atomic resolution

2005/01/24 The STM is working UHV (1.6x 10-10 torr). Atomic resolution on O/Ru (2x2) have been observed.