Journal Article

FZJ-2020-02575

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Anisotropic effect of a magnetic field on the neutron spin resonance in FeSe

Chen, T. ; Chen, Y. ; Tam, D. W.Extern* ; Gao, B. ; Qiu, Y. ; Schneidewind, A.FZJ* ; Radelytskyi, I.FZJ* ; Prokes, K. ; Chi, S. ; Matsuda, M. ; Broholm, C.Extern* ; Dai, P. (Corresponding author)Extern*

2020
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/25345  doi:10.1103/PhysRevB.101.140504

Abstract: We use inelastic neutron scattering to study the effect of a magnetic field on the neutron spin resonance(Er=3.6 meV) of superconducting FeSe (Tc=9 K). While a field aligned along the in-plane direction broadensand suppresses the resonance, ac-axis aligned field does so much more efficiently, consistent with the anisotropicfield-induced suppression of the superfluid density from the heat capacity measurements. These results suggestthat the resonance in FeSe is associated with the superconducting electrons arising from orbital selectivequasiparticle excitations between the hole and electron Fermi surfaces.

Keyword(s): Magnetic Materials (1st) ; Condensed Matter Physics (2nd) ; Magnetism (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. Streumethoden (JCNS-2)
3. Heinz Maier-Leibnitz Zentrum (MLZ)

Research Program(s):

1. 6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621) (POF3-621)
2. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
3. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. PANDA: Cold three axes spectrometer (SR2)

Appears in the scientific report 2020

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; ; ; 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 ; Science Citation Index Expanded ; Web of Science Core Collection

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