Journal Article

PUBDB-2022-07270

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Lifetime of quasiparticles in the nearly free electron metal sodium

Potorochin, D. V. (First author)XFEL.EU*DESY* ; Kurleto, R. ; Clark, O. J. ; Rienks, E. D. L. ; Sánchez-Barriga, J. ; Roth, F.Extern* ; Voroshnin, V. ; Fedorov, A. ; Eberhardt, W. ; Büchner, B. ; Fink, J. (Corresponding author)

2022
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.106.125138  doi:10.3204/PUBDB-2022-07270

Abstract: We report a high-resolution angle-resolved photoemission (ARPES) study of the prototypical nearly free-electron metal sodium. The observed mass enhancement is slightly smaller than that derived in previous studies. The new results on the lifetime broadening increase the demand for theories beyond the random phase approximation. Our results do not support the proposed strong enhancement of the scattering rates of the charge carriers due to a coupling to spin fluctuations. Moreover, a comparison with earlier electron energy-loss data on sodium yields a strong reduction of the mass enhancement of dipolar electron-hole excitations compared to that of monopole hole excitations, measured by ARPES.

Note: ISSN 2469-9969 not unique: **2 hits**.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-S (FS-PETRA-S)
3. SCS (XFEL_E2_SCS)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P04 (PETRA III)
2. SCS: Spectroscopy & Coherent Scattering (SASE3)

Appears in the scientific report 2022

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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