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Electron-lattice-spin correlations and many-body phenomena in 2D semiconductors and related heterostructures

Total Cost €


EC-Contrib. €






Project "FLATLAND" data sheet

The following table provides information about the project.


Organization address
city: Munich
postcode: 80539

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Total cost 2˙640˙632 €
 EC max contribution 2˙640˙632 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-CoG
 Funding Scheme ERC-COG
 Starting year 2016
 Duration (year-month-day) from 2016-10-01   to  2021-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Two-dimensional crystalline materials exhibit exceptional physical properties and offer fascinating potential as fundamental building blocks for future two-dimensional electronic and optoelectronic devices. Transition metal dichalcogenides (TMDCs) are of particular interest as they show a variety of many-body phenomena and correlation effects. Key properties are: i) additional internal degrees of freedom of the electrons, described as valley pseudospin and layer pseudospin, ii) electronic many-body effects like strongly-bound excitons and trions, and iii) electron-lattice correlations like polarons. While these phenomena represent intriguing fundamental solid state physics problems, they are of great practical importance in view of the envisioned nanoscopic devices based on two-dimensional materials.

The experimental research project FLATLAND will address the exotic spin-valley-layer correlations in few-layer thick TMDC crystals and TMDC-based heterostructures. The latter comprise other 2D materials, organic crystals, metals and phase change materials as second constituent. Microscopic coupling and correlation effects, both within pure materials as well as across the interface of heterostructures, will be accessed by time- and angle-resolved extreme ultraviolet-photoelectron spectroscopy, femtosecond electron diffraction, and time-resolved optical spectroscopies. The project promises unprecedented insight into the microscopic coupling mechanisms governing the performance of van der Waals-bonded devices.


year authors and title journal last update
List of publications.
2019 Dominik Christiansen, Malte Selig, Ermin Malic, Ralph Ernstorfer, Andreas Knorr
Theory of exciton dynamics in time-resolved ARPES: intra- and intervalley scattering in two-dimensional semiconductors
published pages: , ISSN: , DOI:
arXiv preprint server 2019-08-29
2019 Vincent Stimper, Stefan Bauer, Ralph Ernstorfer, Bernhard Schölkopf, R. Patrick Xian
Multidimensional Contrast Limited Adaptive Histogram Equalization
published pages: , ISSN: , DOI:
arXiv preprint server 2019-08-29
2019 Thomas Vasileiadis, Emmanuel N. Skountzos, Dawn Foster, Shawn P. Coleman, Daniela Zahn, Faruk Krečinić, Vlasis G. Mavrantzas, Richard E. Palmer, Ralph Ernstorfer
Ultrafast rotational motions of supported nanoclusters probed by electron diffraction
published pages: , ISSN: 2055-6756, DOI: 10.1039/c9nh00031c
Nanoscale Horizons 2019-08-29
2018 Michele Puppin
Time- and angle-resolved photoemission spectroscopy on bidimensional semiconductors with a 500 kHz extreme ultraviolet light source
published pages: , ISSN: , DOI:
FU Berlin Repository 2019-08-29
2019 M. Puppin, Y. Deng, C. W. Nicholson, J. Feldl, N. B. M. Schröter, H. Vita, P. S. Kirchmann, C. Monney, L. Rettig, M. Wolf, R. Ernstorfer
Time- and angle-resolved photoemission spectroscopy of solids in the extreme ultraviolet at 500 kHz repetition rate
published pages: 23104, ISSN: 0034-6748, DOI: 10.1063/1.5081938
Review of Scientific Instruments 90/2 2019-05-22
2018 Thomas Vasileiadis, Lutz Waldecker, Dawn Foster, Alessandra Da Silva, Daniela Zahn, Roman Bertoni, Richard E. Palmer, Ralph Ernstorfer
Ultrafast Heat Flow in Heterostructures of Au Nanoclusters on Thin Films: Atomic Disorder Induced by Hot Electrons
published pages: 7710-7720, ISSN: 1936-0851, DOI: 10.1021/acsnano.8b01423
ACS Nano 12/8 2019-05-22
2019 Dominik Ehberger, Kathrin J. Mohler, Thomas Vasileiadis, Ralph Ernstorfer, Lutz Waldecker, Peter Baum
Terahertz Compression of Electron Pulses at a Planar Mirror Membrane
published pages: 24034, ISSN: 2331-7019, DOI: 10.1103/physrevapplied.11.024034
Physical Review Applied 11/2 2019-05-22
2019 Dmytro Kutnyakhov, Rui Patrick Xian, Maciej Dendzik, Michael Heber, Federico Pressacco, Steinn Ymir Agustsson, Lukas Wenthaus, Holger Meyer, Sven Gieschen, Giuseppe Mercurio, Adrian Benz, Kevin Bühlman, Simon Däster, Rafael Gort, Davide Curcio, Klara Volckaert, Marco Bianchi, Charlotte Sanders, Jill Atsuko Miwa, Søren Ulstrup, Andreas Oelsner, Christian Tusche, Ying-Jiun Chen, Dmitrii Vasilyev,
First time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser
published pages: arXiv:1906.12155, ISSN: , DOI:
arXiv preprint server 2019-08-29
2019 R. Patrick Xian, Laurenz Rettig, Ralph Ernstorfer
Symmetry-guided nonrigid registration: The case for distortion correction in multidimensional photoemission spectroscopy
published pages: 133-139, ISSN: 0304-3991, DOI: 10.1016/j.ultramic.2019.04.004
Ultramicroscopy 202 2019-08-29

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