Unveiling Electron-Phonon and Electron-Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2
Artikel i vetenskaplig tidskrift, 2024

Studying and understanding many-body interactions, particularly electron-boson interactions, is essential for a deeper elucidation of fundamental physical phenomena and the development of novel material functionalities. Here, this aspect is explored in the weak itinerant ferromagnet LaCo2P2 by means of momentum-resolved photoelectron spectroscopy (ARPES) and first-principles calculations. The detailed ARPES patterns enable to unveil bulk and surface bands, spin splittings due to Rashba and exchange interactions, as well as the evolution of bands with temperature, which altogether creates a solid foundation for theoretical studies. The latter has allowed to establish the impact of electron-boson interactions on the electronic structure, that are reflected in its strong renormalization driven by electron-magnon interaction and the emergence of distinctive kinks of surface and bulk electron bands due to significant electron-phonon coupling. Our results highlight the distinct impact of electron-boson interactions on the electronic structure, particularly on the itinerant d states. Similar electronic states are observed in the isostructural iron pnictides, where electron-boson interactions play a crucial role in the emergence of superconductivity. It is believed that further studies of material systems involving both magnetically active d- and f-sublattices will reveal more advanced phenomena in the bulk and at distinct surfaces, driven by a combination of factors including Rashba and Kondo effects, exchange magnetism, and electron-boson interactions.

electron-phonon interaction

electron-magnon interaction

LaCo2P2

ARPES

Författare

D. Yu. Usachov

National University of Science & Technology (MISIS)

Moscow Institute of Physics and Technology

Saint Petersburg State University - Spsu

Khadiza Ali

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

G. Poelchen

Technische Universität Dresden

M. Mende

Technische Universität Dresden

S. Schulz

Technische Universität Dresden

M. Peters

Johann Wolfgang Goethe Universität Frankfurt am Main

K. Bokai

Saint Petersburg State University - Spsu

I. Yu. Sklyadneva

Donostia International Physics Center

V. Stolyarov

National University of Science & Technology (MISIS)

Moscow Institute of Physics and Technology

E. V. Chulkov

Universidad del Pais Vasco / Euskal Herriko Unibertsitatea

Saint Petersburg State University - Spsu

Donostia International Physics Center

K. Kliemt

Johann Wolfgang Goethe Universität Frankfurt am Main

S. Paischer

Johannes Kepler Univ Linz

P. A. Buczek

Hochschule für Angewandte Wissenschaften Hamburg

R. Heid

Karlsruher Inst Quantum Mat & Technol IQMT

F. Hempel

Technische Universität Dresden

M. Ruesing

Universität Paderborn

A. Ernst

Max-Planck-Gesellschaft

Johannes Kepler Univ Linz

C. Krellner

Johann Wolfgang Goethe Universität Frankfurt am Main

S. V. Eremeev

Russian Academy of Sciences

D. V. Vyalikh

Donostia International Physics Center

Basque Foundation for Science (Ikerbasque)

ADVANCED PHYSICS RESEARCH

2751-1200 (ISSN)

Vol. In Press

Ämneskategorier (SSIF 2011)

Den kondenserade materiens fysik

DOI

10.1002/apxr.202400137

Mer information

Senast uppdaterat

2025-03-17