Jasper van Wezel - homepage

University of Amsterdam
Institute of Physics
(Science Park 904, room C4.260)
Postbus 94485
1090 GL Amsterdam
The Netherlands

Phone: +31 (0) 20 525 5746
Fax: +31 (0) 20 525 5778
Email: physics@jvanwezel.com


I am an associate professor in Condensed Matter Theory at the University of Amsterdam.
I do research in theoretical condensed matter physics at the Institute for Theoretical Physics (ITFA) within the Institute of Physics.



* Look here for the complete list of research highlights, my full CV, my list of presentations, and my list of publications. *

Recent Highlights

 

Recent Publications

Excitonium discovered in real material

Excitons are pairs of electrons and holes inside a solid material that together behave like a single particle. It has long been suspected that when many such excitons exist in the same piece of matter, they can form a new state of matter, called excitonium. This new phase is essentially a single giant quantum state of excitons, called a Bose-Einstein condensate. If that state does exist, it is expected to hold important clues to the understanding of many other mysterious phases of matter, including even high-termperature superconductivity. However, observing an exciton condensate in any real material has remained a much sought-after goal of condensed matter physicists for decades. In a recent experiment, we now finally prove that this elusive state of matter really does exist.
  Highlight Picture

For the full story, look here.
 
 
Highlight Picture   Finding all possible topological insulators in crystals

Topology has over the past decade or so developed into a central organising principle in the characterisation of phases of matter. While all topological phases of fermions in free space have been fully worked out, taking into account what happens in real-life materials that have additional crystal symmetries remains an active field of research. We recently took a step forwards in this area, by developing a complete classification of all possible crystalline topological insulators, in any dimension, in the presence of only lattice symmetries.

For the full story, look here.
 
 
Spirals of electron density


Spirals are an intriguing shape to find in the natural world because of their inherent handedness – turning either to the left or right as you move along them. The recent discovery that electrons within a solid material can spontaneously form into a corkscrew shape was an unexpected example of a spiral emerging in physics. The surprisingly straightforward explanation for this phenomenon has recently attracted some attention in the popular science media.
  Highlight Picture

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  1. "Visualizing topological transport"
    Mariya A. Lizunova, Samuel Kuyper, Bernet Meijer, Ana Silva, Jasper van Wezel
    arXiv, 1905.03668 (2019)
    arXiv:1905.03668

  2. "Visualizing topological transport in charge ordered materials"
    Mariya A. Lizunova, Cristiane Morais Smith, Jasper van Wezel
    J. Phys.: Conf. Ser., 1189, 012015 (2019)
    doi:10.1088/1742-6596/1189/1/012015

  3. "Charge-density-wave in 1T-TiSe2: exciton- phonon separation by femtosecond valence band dynamics"
    H. Hedayat, D. Bugini, S. Karbassi, S. Friedmann, J. van Wezel, S. R. Clark, C. Sayers, E. Da Como, G. Cerullo, C. Dallera, E. Carpene
    EPJ Web of Conferences, 205, 04008 (2019)
    doi:10.1051/epjconf /201920504008


Look here for the full list of publications.