02/05/2016 14:00

Tomas Samuely, Ph.D.,
Centre of Low Temperature Physics, P. J. Safarik University, Kosice, Slovakia

Scanning probe microscopy imaging offers unparalleled spatial resolution, but its poor temporal resolution renders it impractical for the investigation of dynamic processes. [1] We devised a novel method that enables the use of scanning probe microscopy for recording the periodic motion at nanoscale with submillisecond resolution. We demonstrate the method by visualizing periodic motion of superconducting vortices orbiting in ac magnetic field, by means of scanning tunneling microscopy. Direct observation of this process reveals different dynamical modes of the driven vortex lattice as well as the unforeseen intricacy of the vortex trajectories. [2]
[1] G. Schitter, M. J. Rost, Mater. Today, 11, 40-48 (2008)
[2] M. Timmermans, T. Samuely, B. Raes, J. Van de Vondel, and V. V. Moshchalkov, ACS NANO, 8, 2782-2787 (2014). 

Short Bio:
Tomas Samuely began his experimental career in 2003 in the team of prof. G. Dietler at Ecole Polytechnique Federal de Lausanne, Switzerland, by investigating biological samples with Atomic Force Microscopy. He obtained the M. Sc. in 2004 at the Comenius University in Bratislava, Slovakia. In 2008, he received the PhD. degree for his research of self-assembled organic molecules studied by Scanning Tunneling Microscopy, in the team of prof. H.-J. Guntherodt at the University of Basle, Switzerland. He was a postdoctoral fellow in the team of prof. V. V. Moshchalkov at the Katholieke Universiteit Leuven, Belgium, where he focused on the investigation of superconducting nanostructures by means of Scanning Tunneling Microscopy and Spectroscopy. This research topic remains his main interest at his current position as a senior researcher at the Centre of Low Temperature Physics, P. J. Safarik University in his hometown Kosice in Slovakia. Tomas Samuely is the author of 16 scientific publications with over 100 citations (WoS) and was awarded the first prize in the Young physicists’ competition 2015 of the Slovak Academy of Sciences.

EE Department Seminars
May 2, 2016, Monday 14:00-15:00
Yorgo Istefanopulos Meeting Lounge