strong correlation phenomena

 

The group investigates ultrafast phenomena that are caused by strong correlations in condensed matter systems. Examples are photoinduced insulator-to-metal transitions or quasiparticle dynamics in excitonic insulators. An overview of our work on the photoinduced structural phase transition in VO2 can be found here.

 

related publications

Selene Mor, Marc Herzog, Johannes Noack, Naoyuki Katayama, Minoru Nohara, Hide Takagi, Annette Trunschke, Takashi Mizokawa, Claude Monney, Julia Stähler
Inhibition of the photoinduced structural phase transition in the excitonic insulator Ta2NiSe5
Phys. Rev. B 97 115154 (2018) (publisher version) (arXiv)

Selene Mor, Marc Herzog, Denis Golez, Philipp Werner, Martin Eckstein, Naoyuki Katayama, Minoru Nohara, Hide Takagi, Takashi Mizokawa, Claude Monney, Julia Stähler
Ultrafast electronic band gap control in an excitonic insulator
Phys. Rev. Lett. 119 086401 (2017) (publisher version)

Daniel Wegkamp and Julia Stähler
Ultrafast dynamics during the photoinduced phase transition in VO2
Progress in Surface Science 90 464 (2015) (publisher version) (free full text)

M. Mitrano, G. Cotugno, S.R. Clark, R. Singla, S. Kaiser et al.
Pressure dependent relaxation in the photo-excited Mott insulator ET-F2TCNQ: influence of hopping and correlations
Phys. Rev. Lett. 112 117801 (2014) (publisher version) (free full text)

D. Wegkamp, M. Meyer, C. Richter, M. Wolf, and J. Stähler
Photoinduced work function modifications and their effect on photoelectron spectroscopy
Appl. Phys. Lett. 103 151603 (2013) (publisher version) (free full text)

S. Wall, L. Foglia, D. Wegkamp, K. Appavoo, J. Nag, R. F. Haglund, J. Stähler, M. Wolf
Tracking the evolution of the electronic and structural properties of VO2 during the ultrafast photoinduced insulator-metal transition
Phys. Rev. B 87 115126 (2013) (publisher version) (free full text)

S. Wall, D. Wegkamp, L. Foglia, K. Appavoo, J. Nag, R. F. Haglund, J. Stähler, M. Wolf
Ultrafast changes in lattice symmetry probed by coherent phonons
Nat. Commun., 3, 721 (2012), (publisher version) (free full text)

press releases

T. Buerke
Schneller Wandel im Kristall

D. Salisbury
Ultrafast sonograms shed new light on rapid phase transitions