Revealing the Orbital Composition of Heavy Fermion Quasiparticles in CeRu2Si2
Artikel i vetenskaplig tidskrift, 2023

We present a resonant angle-resolved photoemission spectroscopy (ARPES) study of the electronic band structure and heavy fermion quasiparticles in CeRu2Si2. Using light polarization analysis, considerations of the crystal field environment and hybridization between conduction and f electronic states, we identify the d-electronic orbital character of conduction bands crossing the Fermi level. Resonant ARPES spectra suggest that the localized Ce f states hybridize with eg and t2g states around the zone center. In this fashion, we reveal the orbital structure of the heavy fermion quasiparticles in CeRu2Si2 and discuss its implications for metamagnetism and superconductivity in the related compound CeCu2Si2

Författare

K. P. Kramer

Universität Zürich

Rina Tazai

Nagoya University

K. Von Arx

Universität Zürich

M. Horio

Universität Zürich

Julia Küspert

Universität Zürich

Q. Wang

Universität Zürich

Yasmine Sassa

Chalmers, Fysik, Materialfysik

T. K. Kim

Diamond Light Source

C. Cacho

Diamond Light Source

Julien E. Rault

SOLEIL Synchrotron

Patrick Le Fèvre

SOLEIL Synchrotron

François Bertran

SOLEIL Synchrotron

Marc Janoschek

Universität Zürich

Paul Scherrer Institut

Nicolas Gauthier

Stanford University

Université de Sherbrooke

Daniel G. Mazzone

Laboratory for Neutron Scattering, Villigen

Ramzy Daou

Centre national de la recherche scientifique (CNRS)

J. Chang

Universität Zürich

Journal of the Physical Society of Japan

0031-9015 (ISSN) 13474073 (eISSN)

Vol. 92 10 104701

Framtidens Lågdimensionella Skyrmion Material

Vetenskapsrådet (VR) (2017-05078), 2019-06-01 -- 2021-12-31.

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.7566/JPSJ.92.104701

Mer information

Senast uppdaterat

2023-11-14