Coherent heavy quasiparticles in CePt5 surface alloy
M. Klein, A. Nuber, H. Schwab, N. Tobita, M. Higashiguchi, J. Jiang,, S. Fukuda, K. Tanaka, K. Shimada, M. Mulazzi, F. F. Assaad, F. Reinert
TL;DR
This study uses high-resolution ARPES and DMFT calculations to investigate the formation of heavy quasiparticles in the CePt5 surface alloy, revealing temperature-dependent heavy-fermion band coherence.
Contribution
It provides experimental evidence and theoretical modeling of heavy quasiparticle formation in CePt5, advancing understanding of surface heavy-fermion systems.
Findings
Observation of temperature-dependent heavy-fermion band formation.
Agreement between ARPES data and DMFT calculations.
Identification of coherent low-energy quasiparticles near the Fermi level.
Abstract
We report on the results of a high-resolution angle-resolved photoemission (ARPES) study on the ordered surface alloy CePt5. The temperature dependence of the spectra show the formation of the coherent low-energy heavy-fermion band near the Fermi level. This experimental data is supported by a multi-band model calculation in the framework of the dynamical mean field theory (DMFT).
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