Theory of SPM

News

Colloquium - R. Moeller
28/04/2011 15:00 (Seminarni mistnost budova A) »more info

Colloquium - A. Heinrich
21/03/2011 15:00 (Seminarni mistnost budova A) »more info

Seminar - Petr Klapetek
14/02/2011 14:00 (Zasedaci mistnost budova B) »more info

Seminar - Guy Le Lay
11/02/2011 11:00 (Seminarni mistnost budova A) »more info

Our paper published in PRL Jan 2011
»more info

Seminar András Berkó
15/11/2010 15:00 (Seminarni mistnost budova A) »more info

Seminar Martin Svec
14/11/2010 15:00 (Seminarni mistnost budova A) »more info

2nd QPlus workshop 8/10/10
2nd International QPlus Workshop 8.10.2010 »more info

Seminar Y. J. Dappe 25/5/10
25/5/2010 10:00 (Seminarni mistnost budova A) »more info

Seminar J. Repp 13/4/2010
14/3/2010 15:00 (Seminarni mistnost budova A) »more info

Seminar T. Novotny 2/3/2010
»more info

Seminar R. Martonak 23/2/10
»more info

4/2/10 Colloquium S. Lindsay
»more info

18/1/10 Our work highlighted on Nanotech.org website.
»more info

30/12/09 Our paper about atomic contrast of KPFM published in PRL
»more info

Seminar J.P. Lewis 9/12/09 14:00
»more info

Seminar P. Kocan 25/11/09 15:00
»more info

14.-15.10. 2009 workshop "Simultaneous STM/AFM measurements using tuning fork based sensors"
»more info

We aim to understand ongoing processes at atomic scale during SPM measurements. The detail knowledge of these processes is necessary for correct interpretation of experimental data and development of new techniques. We apply DFT total energy calculations to simulate complex interaction between SPM tip and sample But addressing these complex problems with a fully converged first-principles description would be still too computationally exigent and in many cases exceeding possibilities of nowadays high performance computers. Therefore we use a home-built fast local orbital DFT code Fireball devised with the aim of computational efficiency. Optionally, calculations are checked with more demand traditional plane-wave DFT methods. In particular, we are interested in these topics:

(i) single-atom chemical identification [1]

(ii) new procedures of atomic manipulations [2,3]

(iii) detail understanding of atomic-scale contrast [4]

(iv) energy dissipation at atomic scale [5].

Y. Sugimoto, P. Pou, M. Abe, P. Jelinek, R. Perez, S. Morita and O. Custance, "Chemical identification of individual surface atoms by atomic force microscopy" Nature 446, 64 (2007).
Y. Sugimoto, P. Jelinek, P. Pou, S. Morita and O. Custance, R. Perez and M. Abe, "Mechanism for room-temperature single atom lateral manipulations on semiconductors using dynamic force microscopy" Phys. Rev. Lett. 98, 106104 (2007).
Y. Sugimoto, P. Pou, O. Custance, P. Jelinek, M. Abe, R. Perez, S. Morita “Complex Pattering by Vertical Interchange Atom Manipulation Using Atomic Force Microscopy” Science 322, 413 (2008).
S. Sadewasser, P. Jelinek, C. Fang, O. Custance, Y. Yamada, Y. Sugimoto. M. Abe, S. Morita “New insights on atomic-resolution Frequency-Modulation Kelvin Probe Force Microscopy imaging on semiconductors” (submitted)
N. Oyabu, P. Pou, Y. Sugimoto, P. Jelinek, M. Abe, S. Morita, R. Perez and O. Custance: "Single Atomic Contact Adhesion and Dissipation in Dynamic Force Microscopy" Phys. Rev. Lett. 96, 106101 (2006).