Scientific project

 

NEWFELPR (outgoing scheme)

 

FemtoBias

  
project leader

Damir Dominko

  
associates prof. Jure Demšar (Sveucilište Mainz)
prof. Vikor Kabanov (Institut Jožef Stefan)
  
start date01.12.2014.
end date30.11.2017.
  
total ammount111360.20 EUR
  
research areasSolid state physics

 

Abstract

Charge density wave (CDW) and superconductors (SC) are collective ground states emerging from interplay between electron and phonon degrees of freedom. Coupling strengths, ultrafast processes and order parameter dynamics can be investigated by ultrafast time-resolved spectroscopies. In FemtoBias project we propose a novel approach to study ultrafast dynamics of CDWs and SCs, driven out-of equilibrium by applying external bias. External current will break the inversion symmetry of CDW state and induce the coupling between Raman active (amplitude) and infrared active (phase) collective modes. Such coupling has not been studied thus far. SCs will be exposed to external currents to study: i) the influence of vortex motion on the order parameter dynamics by time resolved THz spectroscopy and ii) the dynamics of phase dislocation lines using time resolved magneto-optic imaging. Special attention will be dedicated to the noise reduction through innovative experimental procedures.

Publications

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Liudmila Alyabyeva, Viktor I. Torgashev, Elena S. Zhukova, Denis Vinnik, Svetlana Gudkova, Anatolii S. Prokhorov, David Rivas Gongora, Tomislav Ivek, Silvia Tomic, Nikolina Novosel, Damir Staresinic, Damir Dominko, Zvonko Jaglicic, Dmitry Zherebtsov, Martin Dressel, Boris P. GorshunovInfluence of chemical substitution on broadband dielectric response of barium-lead M-type hexaferrite
New Journal of Physics 21,063016 (2019)
DOI: 10.1088/1367-2630/ab2476 20190612

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M. J. Neugebauer, T. Huber, M. Savoini, E. Abreu, V. Esposito, M. Kubli, L. Rettig, E. Bothschafter, S. Grübel, T. Kubacka, J. Rittmann, G. Ingold, P. Beaud, D. Dominko, J. Demsar, and S. L. JohnsonOptical control of vibrational coherence triggered by an ultrafast phase transition,
Phys. Rev. B 99, 220302(R) (2019)
DOI: 10.1103/PhysRevB.99.220302 20190607

IF Ⓒ 2017