Speaker
Description
The study of low-dimensional materials—such as thin films, multilayers, and nanostructures—has become increasingly important in science and technology. Reducing a material’s dimensionality often leads to the emergence of new physical properties that are not present in its bulk form, making low-dimensional systems highly attractive for applications in electronics, energy storage, and quantum technologies.
In this seminar, we will review the experimental research lines that are active within our department mainly concerning either surface physics or nanomagnetism, aiming at engineering materials at the atomic or nanometer scale and achieving precise control over their structure and functionality. These activities are hosted in two multidisciplinary laboratories, that represent a joint effort between Dip-FISGEO and CNR-IOM.
The surface physics lab is centered on two versatile chambers in ultra-high-vacuum, where ultrathin films can be carefully deposited and then analysed using a variety of in-situ techniques, such as electron photoemission spectroscopy, inverse photoemission, electron diffraction, Auger effect, as well as UV and X-ray spectroscopy. We will summarize recent results concerning organic semiconductors, phosphorene, and amorphous thin films.
The nanomagnetism lab I essentially based on the exploitation of the Brillouin light scattering technique to investigate magnetic nanomaterials revealing spin waves in either wavevector- resolved or spatially-resolved options. Examples of recent applications to the analysis of the dynamic modes and the band structure of magnonic materials will be reviewed. In addition, the BLS technique can be exploited also to reveal phonons in thin films and this can be very important, for instance, to elastically characterize thin coatings exploited in different applications.