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Extreme Quantum Matter in Solids

Total Cost €


EC-Contrib. €






 ExQuiSid project word cloud

Explore the words cloud of the ExQuiSid project. It provides you a very rough idea of what is the project "ExQuiSid" about.

traced    spectrum    suggests    electronic    limit    transverse    theory    tuned    characterisation    disagreement    phases    vector    superconductivity    milli    temperatures    extreme    striking    equilibrium    first    model    experiment    particle    mysteries    excitations    point    transition    charge    permit    spectroscopy    crystal    insulators    local    metals    calorimetry    single    nature    forms    ultra    solids    kelvin    creation    ev    neutron    classification    periodically    notably    pioneering    lack    energy    breakdown    body    partial    magnetic    exquisid    magnetometry    stochastic    mediated    experimentally    transport    quantum    overwhelming    unprecedented    energies    entanglement    temperature    quasi    spin    magnetically    emergent    instabilities    materials    correlations    experimental    transitions    par    representing    excellence    group    purity    time    nano    close    dynamical    starting    localisation    day    combined    anomalous    extensively    generation    resolution   

Project "ExQuiSid" data sheet

The following table provides information about the project.


Organization address
address: Arcisstrasse 21
postcode: 80333

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˙500˙000 €
 EC max contribution 2˙500˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-ADG
 Funding Scheme ERC-ADG
 Starting year 2018
 Duration (year-month-day) from 2018-06-01   to  2023-05-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Quantum stochastic processes in solids, representing many-body systems par excellence, are believed to lead to extreme forms of quantum entanglement and non-local correlations (extreme quantum matter), that offer a well-defined starting point for an understanding of a wide range of anomalous materials properties, as well as emergent electronic phases such as magnetically mediated superconductivity or partial spin and charge order. While overwhelming experimental evidence clearly suggests a breakdown of traditional concepts such as well-defined quasi-particle excitations, the striking present-day disagreement between experiment and theory may be traced to the lack of experimental information on the spectrum of quantum stochastic many-body processes in solids in the low-energy and low-temperature limit close to and far from equilibrium.

ExQuiSid will advance the understanding of the nature of extreme quantum matter in the most extensively studied model systems, notably simple magnetic materials (insulators and metals) tuned through a quantum phase transition. For the proposed studies my group has implemented a new generation of methods covering for the first time neutron spectroscopy with an unprecedented nano-eV resolution even under large magnetic fields, transverse-field vector magnetometry, calorimetry and transport down to milli-Kelvin temperatures, and, ultra-high purity single-crystal growth combined with advanced materials characterisation.

ExQuiSid will (i) solve long-standing mysteries in model-systems of extreme quantum phase transitions, (ii) experimentally enable and permit pioneering studies on the creation, nature and classification of non-equilibrium quantum matter in solids at ultra-low energies and temperatures, and (iii) experimentally enable and permit pioneering studies of quantum matter driven periodically out of equilibrium to identify dynamical quantum instabilities and dynamical quantum phases such as many body localisation.


year authors and title journal last update
List of publications.
2019 Petr Čermák, Astrid Schneidewind, Benqiong Liu, Michael Marek Koza, Christian Franz, Rudolf Schönmann, Oleg Sobolev, Christian Pfleiderer
Magnetoelastic hybrid excitations in CeAuAl 3
published pages: 6695-6700, ISSN: 0027-8424, DOI: 10.1073/pnas.1819664116
Proceedings of the National Academy of Sciences 116/14 2020-03-05
2019 Christian Franz, Steffen Säubert, Andreas Wendl, Franz X. Haslbeck, Olaf Soltwedel, Johanna K. Jochum, Leonie Spitz, Jonas Kindervater, Andreas Bauer, Peter Böni, Christian Pfleiderer
MIEZE Neutron Spin-Echo Spectroscopy of Strongly Correlated Electron Systems
published pages: 81002, ISSN: 0031-9015, DOI: 10.7566/jpsj.88.081002
Journal of the Physical Society of Japan 88/8 2020-03-05
2019 F. Rucker, C. Pfleiderer
Compact susceptometer for studies under transverse field geometries at very low temperatures
published pages: 73903, ISSN: 0034-6748, DOI: 10.1063/1.5087949
Review of Scientific Instruments 90/7 2020-03-05
2019 S. Pöllath, A. Aqeel, A. Bauer, C. Luo, H. Ryll, F. Radu, C. Pfleiderer, G. Woltersdorf, C. H. Back
Ferromagnetic Resonance with Magnetic Phase Selectivity by Means of Resonant Elastic X-Ray Scattering on a Chiral Magnet
published pages: , ISSN: 0031-9007, DOI: 10.1103/physrevlett.123.167201
Physical Review Letters 123/16 2020-03-05
2019 M. Skoulatos, F. Rucker, G. J. Nilsen, A. Bertin, E. Pomjakushina, J. Ollivier, A. Schneidewind, R. Georgii, O. Zaharko, L. Keller, Ch. Rüegg, C. Pfleiderer, B. Schmidt, N. Shannon, A. Kriele, A. Senyshyn, A. Smerald
Putative spin-nematic phase in BaCdVO ( PO 4 ) 2
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.100.014405
Physical Review B 100/1 2020-03-05
2018 A. Chacon, L. Heinen, M. Halder, A. Bauer, W. Simeth, S. Mühlbauer, H. Berger, M. Garst, A. Rosch, C. Pfleiderer
Observation of two independent skyrmion phases in a chiral magnetic material
published pages: 936-941, ISSN: 1745-2473, DOI: 10.1038/s41567-018-0184-y
Nature Physics 14/9 2020-03-05
2018 M. Halder, A. Chacon, A. Bauer, W. Simeth, S. Mühlbauer, H. Berger, L. Heinen, M. Garst, A. Rosch, C. Pfleiderer
Thermodynamic evidence of a second skyrmion lattice phase and tilted conical phase in Cu 2 OSeO 3
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.98.144429
Physical Review B 98/14 2020-03-05
2018 T. Adams, M. Garst, A. Bauer, R. Georgii, C. Pfleiderer
Response of the Skyrmion Lattice in MnSi to Cubic Magnetocrystalline Anisotropies
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.121.187205
Physical Review Letters 121/18 2020-03-05
2019 J. Kindervater, I. Stasinopoulos, A. Bauer, F. X. Haslbeck, F. Rucker, A. Chacon, S. Mühlbauer, C. Franz, M. Garst, D. Grundler, C. Pfleiderer
Weak Crystallization of Fluctuating Skyrmion Textures in MnSi
published pages: , ISSN: 2160-3308, DOI: 10.1103/physrevx.9.041059
Physical Review X 9/4 2020-03-05
2019 F. Haslbeck, S. Säubert, M. Seifert, C. Franz, M. Schulz, A. Heinemann, T. Keller, Pinaki Das, J. D. Thompson, E. D. Bauer, C. Pfleiderer, M. Janoschek
Ultrahigh-resolution neutron spectroscopy of low-energy spin dynamics in UGe 2
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.99.014429
Physical Review B 99/1 2020-03-05
2019 T. Weber, J. Waizner, P. Steffens, A. Bauer, C. Pfleiderer, M. Garst, P. Böni
Polarized inelastic neutron scattering of nonreciprocal spin waves in MnSi
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.100.060404
Physical Review B 100/6 2020-03-05
2019 Pau Jorba, Michael Schulz, Daniel S. Hussey, Muhammad Abir, Marc Seifert, Vladimir Tsurkan, Alois Loidl, Christian Pfleiderer, Boris Khaykovich
High-resolution neutron depolarization microscopy of the ferromagnetic transitions in Ni3Al and HgCr2Se4 under pressure
published pages: 176-183, ISSN: 0304-8853, DOI: 10.1016/j.jmmm.2018.11.086
Journal of Magnetism and Magnetic Materials 475 2020-03-05

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