LMA

Metal Epitaxia and nanostructures

  Metal Epitaxia and nanostructures

 

In this research area, we work in the research line of Rare Earth Nanostructures:
The goal of this line is the study of the competing interactions (dipolar, elastic, electronic, etc) that are responsible for the self-organization of metal-on-metal systems, with special emphasis on rare earth adatoms. The so-created self-organization may give rise to individual atom arrays, as well as to nanostructures (see figure) with different dimensionality, depending on the specific preparation procedure. We thus envision on these systems an interesting outcome of quantum side effects in the electronic and magnetic properties of such nanostructures.
We characterize the preparation procedure of materials well below the monolayer, and becomes important in order to obtain long-range self organized materials instead of an assembly of defective polycrystalline arrays of nanoparticles. Our current investigations focus on rare earths deposited at room temperature on W(110) well below one monolayer. W(110) is particularly interesting because it provies an structural anisotropy, streering the growth of one dimensional metal systems.
Metal epitaxia

Examples of structures of Tm on the (110)W surface: atomic wires, isolated adatoms and hcp layer.