MORE-TEM

 

MOmentum and position REsolved mapping Transmission Electron energy loss Microscope

MORE-TEM - a revolutionary scientific instrument for materials science

ERC-Synergy Project
1.5.2021- 30.4.2027

A major mission of condensed-matter physics is to understand material properties via the knowledge of the energy vs. momentum (q) dispersion and lifetime of fundamental excitations. Unfortunately, none of the available techniques can be applied to emerging nanomaterials: inelastic x-ray scattering & electron energy loss spectroscopy (EELS) in reflection lack the spatial resolution whereas EELS in transmission electron microscopy lacks the needed combined spatial, energy & q-resolution. In MORE-TEM, we develop a new spectrometer enabling to map excitations q-resolved with 0.01 Å-1 resolution and q-averaged down to atomic level, at unprecedented 1 meV energy resolution and at variable temperature between 700K & 4K. This breakthrough is possible by bringing together our synergy group with complementary skills in electron microscopy, electron optics, experimental & theoretical spectroscopy. This opens the so-far unexplored possibility to investigate dispersion and lifetime of phonons, plasmons & excitons in nanomaterials including (organic) molecules, 1D nanotubes, 2D materials, heterostructures & nanocrystals in minerals with a few nm of lateral resolution on samples as thin as an atomic monolayer. Mapping out the spatial and q-landscape of primary excitations will allow us to gain control on quantum phases, like charge-density waves and superconductivity, to engineer new materials for energy (e.g. batteries), (opto-)electronic devices in (organic) electronics, and to model the physical and chemical properties of natural geological systems. This will hugely impact a wide range of applications in physics, chemistry, engineering, as well as in environmental-, geo- & material science. MORE-TEM not only implements features of a large scale facility on a cheaper table-top instrument, but it also pushes q-resolved spectroscopy to the realm of the nanoscale, providing thus a fundamentally new & unique infrastructure for the characterization and optimization of nanomaterials.

News

09.08.2022 12:00
 

MORE-TEM 2022 Symposium

Taking place in presence at the University of Vienna, Faculty of Physics, Austria from September 25th – September 27th, 2022

30.04.2021
 

世界最先端電子顕微鏡の開発に着手

Started development of the world's most advanced electron microscope

Synergy Team

PI: Thomas Pichler

 University of Vienna, Austria

Co-PI: Francesco Mauri

La Sapienza University, Rome, Italy

Co-PI: Max Haider

CEOS GmbH, Heidelberg, Germany

The abovementioned complementary synergy team of experts with expertise in spectroscopy, microscopy and electron optic will develop the MORE-TEM nanospectrometer as “tabletop synchrotron (SP1) to study spatial (SP3) and momentum (SP4) mapping of nanoscale matter specimen (SP2). See sketch below. Figures in the sketch are adapted from the listed references.

References

     

  1. Y-C. Lin, S. Morishita, M.Koshino, C-H. Yeh, P-Y. Teng, P-W. Chiu, H. Sawada, and K. Suenaga,
    Unexpected Huge Dimerization Ratio in One-Dimensional Carbon Atomic Chains
    Nano Letters, 17 (2017) pp.494-500, DOI: 10.1021/acs.nanolett.6b04534
  2.  

  3. R. Senga,T. Pichler,K. Suenaga,
    Electron Spectroscopy of Single Quantum Objects To Directly Correlate the Local Structure to Their Electronic Transport and Optical Properties
    Nano Letters, 16,3661 (2016); DOI: 10.1021/acs.nanolett.6b00825
  4.  

  5. R. Senga, T. Pichler, Y. Yomogida, T. Tanaka, H. Kataura, K.Suenaga
    Direct Proof of a Defect-Modulated Gap Transition in Semiconducting Nanotubes
    Nano Letters, 18,3920 (2018), DOI: 10.1021/acs.nanolett.8b01284
  6.  

  7. Y.-C. Lin, P.-Y. Teng, P.-W. Chiu and K. Suenaga
    Exploring the single atom spin state by electron spectroscopy
    Phys. Rev. Lett., 115 (2015) 206803 DOI: 10.1103/PhysRevLett.115.206803
  8.  

  9. R. Senga, K. Suenaga, P. Barone, S. Morishita, F. Mauri, T. Pichler
    Position and momentum mapping of vibrations in graphene nanostructures
    Nature. 573, 247–250 (2019). https://doi.org/10.1038/s41586-019-1477-8
  10.  

  11. J. Hong, R. Senga, T. Pichler, K. Suenaga,
    Probing Exciton Dispersions of Freestanding Monolayer WSe2 by Momentum-Resolved Electron Energy-Loss Spectroscopy
    Physical Review Letters 124, 087401 (2020); DOI:https://doi.org/10.1103/PhysRevLett.124.087401
  12.  

  13. L. Shi, P. Rohringer, K. Suenaga, Y. Niimi, J. Kotakoski, J.C. Meyer, H. Peterlik, M.Wanko, S. Cahangirov, A. Rubio, Z.J. Lapin, L. Novotny, P. Ayala, T. Pichler,
    Confined linear carbon chains as a route to bulk carbyne
    Nature Materials, 15, 634 (2016); DOI:10.1038/NMAT4617
  14.  

  15. H. Shiozawa, A. Briones-Leon, O. Domanov, G. Zechner, Y. Sato, K. Suenaga, T. Saito, M. Eisterer, E. Weschke, W. Lang, H. Peterlik, T. Pichler
    Nickel clusters embedded in carbon nanotubes as high performance magnets
    Scientific Reports, 5, 15033 (2015); DOI:10.1038/srep15033
  16.  

  17. T. Pichler, H. Kuzmany, H. Kataura, and Y. Achiba.
    Metallic polymers of C60inside single-walled carbon nanotubes.
    Phys. Rev. Lett. 87, 267401 (2001); DOI: 10.1103/PhysRevLett.87.267401.
  18.  

  19. A.K. Geim, I.V. Grigorieva
    Building van der Waals heterostructures.
    Nature 499, 419-425 (2013) doi:10.1038/nature12385
  20.  

  21. P. Fratzl, R. Weinkamer
    Nature’s hierarchical materials
    Progress in Materials Science 52,1263–1334 (2007)
  22.