Conference Presentation (After Call)

FZJ-2022-02674

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Neutron scattering on correlated topological materials

Su, Y. (Corresponding author)FZJ*

2022

Abstract: Recent theoretical predictions and experimental realizations of exotic fermions and topologically protected phases in condensed matter have led to tremendous research interests in topological quantum materials. Especially, correlated topological materials, such as magnetic Dirac and Weyl semimetals, and intrinsic magnetic topological insulators etc., in which both non-trivial topology of single-electron band structures and electronic correlation effects are essential for the underlying physics, have emerged as an exciting platform to explore novel electronic and magnetic phenomena. In this talk, I will present a couple of the selected examples of our recent neutron scattering studies of correlated topological materials, including magnetic Dirac semimetal EuMnBi$_2$ [1], magnetic Weyl semimetal Mn$_3$Sn and topological magnon insulators in two-dimensional van der Waals ferromagnets CrSiTe$_3$ and CrGeTe$_3$ [2]. [1] Fengfeng Zhu, et al., Phys. Rev. Research 2, 043100 (2020).[2] Fengfeng Zhu, et al., Sci. Adv. 7, eabi7532 (2021).

Keyword(s): Magnetic Materials (1st) ; Information and Communication (1st) ; Magnetism (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. Heinz Maier-Leibnitz Zentrum (MLZ)
3. Streumethoden (JCNS-2)
4. JCNS-4 (JCNS-4)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)
2. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)

Experiment(s):

1. DNS: Diffuse scattering neutron time of flight spectrometer (NL6S)
2. ILL-IN12: Cold neutron 3-axis spectrometer
3. HEiDi: Single crystal diffractometer on hot source (SR9b)
4. PUMA: Thermal three axes spectrometer (SR7)

Appears in the scientific report 2022

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