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Probing nanoscale and femtosecond fluctuations in high temperature superconductors

Total Cost €


EC-Contrib. €






Project "SeeSuper" data sheet

The following table provides information about the project.


Organization address
city: Castelldefels
postcode: 8860

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 Spain [ES]
 Total cost 1˙789˙165 €
 EC max contribution 1˙789˙165 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2017
 Duration (year-month-day) from 2017-11-01   to  2022-10-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    FUNDACIO INSTITUT DE CIENCIES FOTONIQUES ES (Castelldefels) coordinator 1˙789˙165.00


 Project objective

One of the major outstanding challenges in condensed matter physics is the origin of high temperature superconductivity. Low temperature BCS superconductivity is mediated by the electron-phonon interaction, but this interaction is believed to be too weak to explain high temperature superconductivity. Instead electron interactions are considered responsible, but experimental proof has been difficult to obtain. Despite over thirty years of research, the mechanism responsible for generating the superconducting state still remains unknown.

SeeSuper aims to break this deadlock by applying new experimental techniques to study the superconducting state. Our strategy is to probe high temperature superconductors through their nanoscale and femtosecond fluctuations. We will focus on three key parameters in superconductors: phonons, spins and nanoscale phase separation, with the aim of revealing the coupling mechanism.

Our approach combines transient optical spectroscopy and time-resolved diffuse X-ray scattering to measure the lattice response to large amplitude coherent vibrations, time-resolved non-linear optical spectroscopy to directly probe spin dynamics, and resonant soft X-ray holography to image dynamics on the nanoscale.

We will use these cutting edge techniques to prove our hypothesis, that lattice anharmonicity is the key missing ingredient to explain the origins of high temperature superconductivity. If demonstrated, the impact of such a result will lead to a step-change in our understanding of how superconductivity at high temperature occurs, help guide the search for materials with higher transition temperatures, and influence how we view and understand a much broader class of materials. Furthermore, the experimental techniques that we will develop can be applied to understand a range of materials and will, therefore, have an impact also on the broader field of condensed matter physics.


year authors and title journal last update
List of publications.
2018 Simon Wall, Shan Yang, Luciana Vidas, Matthieu Chollet, James M. Glownia, Michael Kozina, Tetsuo Katayama, Thomas Henighan, Mason Jiang, Timothy A. Miller, David A. Reis, Lynn A. Boatner, Olivier Delaire, Mariano Trigo
Ultrafast disordering of vanadium dimers in photoexcited VO 2
published pages: 572-576, ISSN: 0036-8075, DOI: 10.1126/science.aau3873
Science 362/6414 2019-06-06
2018 Luciana Vidas, Christian M. Günther, Timothy A. Miller, Bastian Pfau, Daniel Perez-Salinas, Elías Martínez, Michael Schneider, Erik Gührs, Pierluigi Gargiani, Manuel Valvidares, Robert E. Marvel, Kent A. Hallman, Richard F. Haglund, Stefan Eisebitt, Simon Wall
Imaging Nanometer Phase Coexistence at Defects During the Insulator–Metal Phase Transformation in VO 2 Thin Films by Resonant Soft X-ray Holography
published pages: 3449-3453, ISSN: 1530-6984, DOI: 10.1021/acs.nanolett.8b00458
Nano Letters 18/6 2019-06-06

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The information about "SEESUPER" are provided by the European Opendata Portal: CORDIS opendata.

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