NEW PERSPECTIVES OF CRYOGENIC AND MAGNETIC RAMAN SPECTROSCOPY – BEYOND PHONONS

When:
31/01/2019 @ 11:00 AM – 11:40 AM Asia/Singapore Timezone
2019-01-31T11:00:00+08:00
2019-01-31T11:40:00+08:00
Where:
S16 Level 6 – Theory Common Conference Room
6 science drive 2

Speaker: Jana Kalbacova Vejpravova
Affiliation: Department of Condensed Matter Physics, TSuNAMI group, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic
Host: Prof. Antonio H. Castro Neto
Location: Click HERE for directions

Abstract Details: The incursion of low-dimensional materials bared exciting physical phenomena underlying progressive concepts for nanoelectronics and quantum computing. However, the key functional principles of these species are usually accessible at rather extreme conditions as low temperatures and high magnetic fields, typically using magnetotransport experiments requiring a sufficiently conductive system and device fabrication. Thanks to the unique nature of Raman scattering processes in some classes of materials, precisious information about the electronic band structure can be obtained and non-trivial electronic degrees of freedom can be accesed and even controlled. In this talk, I will review current state of the art of the Raman spectroscopy and microscopy at cryomagnetic conditions. I will give several examples revealing the power of the approach like investigation of mixing of the non-trivial electronic states with phonons, in situ tracing of topographic states and defects mirrored in charge-strain spatial distribution of graphene and other 2Ds, classification of magnetic phase transitions and spin state switching in spin-crossover molecules. I will also give a brief summary of the experimental base available in our group and large national infrastructure Materials Growth and Measurement Laboratory MGML (see: http://mgml.eu) in context of the actual research projects carried out in our TSuNAMI group.

About the Speaker: J.K.V. (*1980) received master's degree in chemistry (2003) and Ph.D. degree in condensed matter physics (2007) from the Charles University (CU), Prague. After postdoctoral stays in the Hasselt University, Belgium and NIMS, Japan she joined the Institute of Physics, Czech Academy of Sciences (2011) as a senior scientist, later headed a dept. of magnetic nanosystems (2013 – 2016). In 2017, she accepted a permanent position as an assoc. profesor in condesed matter physics in the Faculty of mathematics and physics, CU. Her focus covers 2D materials, nanocarbons, magnetic nanoparticles, f-electron systems, and experiments under cryogenic and magnetic environments. She received several prestigous awards and fundings (i.e. Scopus/Elsevier award, ERC Starting grant).