Strong Rashba Effect and Different fâd Hybridization Phenomena at the Surface of the Heavy-Fermion Superconductor CeIrIn5
Journal article, 2022
New temperature scales and remarkable differences from bulk properties have increasingly placed the surfaces of strongly correlated f materials into the focus of research activities. Applying first-principles calculations and angle-resolved photoelectron spectroscopy measurements, a strong Rashba effect and spin-split surface states at the CeIn surface of the heavy-fermion superconductor CeIrIn5 are revealed. The unveiled 4f-derived electron landscape is remarkably distinct for surface and bulk Ce implying the existence of novel temperature scales near the surface region in this material. These results show that ab initio calculations can reliably predict the unusual electronic and spin structure of surfaces of strongly correlated 4f systems where Rashba spin-orbit-coupling phenomena emerge. It is suggested that the structural blocks of such materials can be combined with magnetically active layers for engineering of novel nanostructural objects with appropriate substrates where the diversity of f-driven properties can be applied for the development of novel functionalities.
surface state
electronic structure
heavy fermion
Author
Max Mende
Technische Universität Dresden
Khadiza Ali
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Lund University
Georg Poelchen
European Synchrotron Radiation Facility (ESRF)
Technische Universität Dresden
Susanne Schulz
Technische Universität Dresden
Vladislav Mandic
Goethe University Frankfurt
Artem V. Tarasov
Saint Petersburg State University - Spsu
C. M. Polley
Lund University
Alexander Generalov
Lund University
Alexander V. Fedorov
Leibniz Association
Helmholtz Association of German Research Centres
Monika Güttler
Technische Universität Dresden
Clemens Laubschat
Technische Universität Dresden
Kristin Kliemt
Goethe University Frankfurt
Yury M. Koroteev
Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences
E. V. Chulkov
Spanish National Research Council (CSIC)
Saint Petersburg State University - Spsu
Donostia International Physics Center
University of the Basque Country (UPV/EHU)
Kurt Kummer
European Synchrotron Radiation Facility (ESRF)
Cornelius Krellner
Goethe University Frankfurt
Dmitry Yu Usachov
Saint Petersburg State University - Spsu
Denis V. Vyalikh
Donostia International Physics Center
Basque Foundation for Science (Ikerbasque)
Advanced Electronic Materials
2199-160X (ISSN) 2199160x (eISSN)
Vol. 8 3 2100768Subject Categories (SSIF 2011)
Materials Chemistry
Other Physics Topics
Condensed Matter Physics
DOI
10.1002/aelm.202100768