Vankó, György
 |
Senior Research Fellow Head of the Femtosecond Spectroscopy and X-ray Spectroscopy Group | Phone: +36 1 392-22-22 ext.: 1736 Fax: +36 1 395-91-51 email: vanko (at) rmki.kfki.hu ORCID: 0000-0002-3095-6551 |
Mr. Vankó has recorded hundreds of Mössbauer spectra in the laboratory of Prof. Attila Vértes, at the Eötvös University, Budapest, to receive his PhD. During this time he amused himself with learning other techniques, which opened his eyes to synchrotron radiation facilities. The enthusiast and (that time) young fellow seeked a postdoc position at the ESRF, where he later became a beamline scientist on the Inelastic Scattering Beamline ID16. After almost seven years at the ESRF, he managed to become a user and returned to his home country, with the intension of building an X-ray spectroscopy group. The group is slowly growing, and makes efforts to get more and more involved in studying electronic and structural dynamics on the fs to ps time scales.
Eötvös Loránd University, Budapest, Hungary
Laboratory of Nuclear Chemistry
|
1993 M.Sc.
2000 Ph.D. | 
|
|
|
| Fellowships, Honours |
1989-1994 Member of the Eötvös Collegium (fondé après l'École Normal Superieure) 1993-1996 TMB research fellow 1996 Hungarian State Eötvös Fellow 2001 Young Scientist Prize of the HAS |
European Synchrotron Radiation Facility, Grenoble, France
Inelastic Scattering Beamline ID16
|
2001-2002 postdoc 2002-2007 beamline scientist | 
|
|
| Inelastic X-ray Scattering on electronic excitations |
Electronic multistability Spin-state transitions Valence transitions Extreme conditions |
Molecular compounds Correlated oxides |
Wigner Research Centre for Physics, Hungarian Academy of Sciences
(from January 2012; till Dec. 2011:)
KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary
| 2007- senior research fellow | 
|
|
with synchrotron radiation Time-resolved X-ray spectroscopy with ps and fs time resolution Mössbauer emission spectroscopy |
Spin-state switching Metal-insulator transitions |
Functional molecules Correlated oxides |
2007-2010 Bolyai János Research Fellowship
2009 Rezső Schmid Prize of the Roland Eötvös Physical Society
2010-2015 ERC Starting Grant
2011 Bolyai Plaquette
2013 MTA Lendület (Momentum) Programme
- High-resolution X-ray spectroscopy
- Electronic bistability
- Ultrafast studies
High-resolution X-ray spectroscopy
- Overview of the techniques
or what can you do with a crystal spectrometer at a synchrotron radiation source?
The answer includes non-resonant inelastic X-ray scattering (NR-IXS), a photon energy loss spectroscopy with controlled momentum transfer, resonant inelastic X-ray scattering (RIXS), X-ray emission spectroscopy (XES), X-ray absorption spectroscopy (XAS), and resonant X-ray emission spectroscopy (RXES)
Quite a bit;) - Improving the resolution of crystal spectrometers,
or how to measure phonons with a 1m arm Raman spectrometer?
Read it here:
S. Huotari, G. Vankó et al., ESRF Highlights 2005
or in this news spotlight - Determination of the spin state of 3d transition metal compounds from X-ray emission (XES)
G. Vankó et al., ESRF Highlights 2002How to get quantitative on the spin momentum from XES ("the IAD approach"):
G. Vankó et al., J. Phys. Chem. B 110 (2006) 11647--11653. - Unravelling details of 1s X-ray absorption pre-edges
Improved resolution
Interference between the absorption and emission channels in 1s2p RXES
Non-local (or off-site) transitions in the pre-edge region
|
|
 |
|
|
 |
|
|
 |
Electronic bistability
- Spin-state transitions in transition metal complexes
- Metal-insulator transitions in transition metal oxides
Ultrafast studies
- Application of X-ray spectroscopy probes in pump-probe experiments (so far)
guest editor to 2 journal volumes My ResearcherID profile 
|
 |
For those speaking Hungarian, a chapter on X-ray spectroscopy: Fejezet a röntgenspektroszkópiáról |
|
English
Hungarian
