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SmB6 electron-phonon coupling constant from time- and angle-resolved photoelectron spectroscopy

Andrea Sterzi1, Alberto Crepaldi2,3*, Federico Cilento3, Giulia Manzoni1, Emmanouil Frantzeskakis4,5, Michele Zacchigna6, Erik van Heumen4, Yingkai Huang4, Mark S. Golden4, Fulvio Parmigiani1,3,7

1 Università degli Studi di Trieste, Via A. Valerio 2, I-34127 Trieste, Italy

2 Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

3 Elettra - Sincrotrone Trieste S.C.p.A., Strada Statale 14, km 163.5, I-34149 Trieste, Italy

4 Van der Waals-Zeeman Institute, Institute of Physics (IoP), University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, The Netherlands

5 CSNSM, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, F-91405 Orsay, France

6 CNR-IOM, Strada Statale 14, km 163.5, I-34149 Trieste, Italy

7 International Faculty, University of Cologne, D-50937 Cologne, Germany

* Corresponding authors emails: alberto.crepaldi@epfl.ch
DOI10.24435/materialscloud:2b-ht [version v1]

Publication date: Apr 09, 2021

How to cite this record

Andrea Sterzi, Alberto Crepaldi, Federico Cilento, Giulia Manzoni, Emmanouil Frantzeskakis, Michele Zacchigna, Erik van Heumen, Yingkai Huang, Mark S. Golden, Fulvio Parmigiani, SmB6 electron-phonon coupling constant from time- and angle-resolved photoelectron spectroscopy, Materials Cloud Archive 2021.56 (2021), doi: 10.24435/materialscloud:2b-ht.


This record contains the experimental results of the first ultrafast spectroscopic investigation of the electronic properties of SmB6, proposed to realize a Kondo topological insulator. We employ a multi-temperature model to extract the electron-phonon coupling constant in the range 0.13-0.04, within the assumption of a strong coupling to the optical phonon modes in the range 10-19 meV.

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Electronic bands Electron-phonon coupling Kondo system Experimental SNSF

Version history:

2021.56 (version v1) [This version] Apr 09, 2021 DOI10.24435/materialscloud:2b-ht