SKM 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 67: Poster: Electronic Structure of Surfaces

O 67.4: Poster

Mittwoch, 29. März 2023, 18:00–20:00, P2/EG

Spin asymmetries in photoemission from PtTe2. — •Muthu Prasath Thirugnanasambandam Masilamani¹, Jakub Schusser¹, Mohammed Qahosh², Gustav Bihlmayer³, Lukasz Plucinski², and Friedrich Reinert¹ — ¹Experimentelle Physik VII and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, Würzburg, Germany — ²Peter Grünberg Institut (PGI-6), Forschungszentrum Jülich GmbH, Jülich, Germany — ³Peter Grünberg Institut (PGI-1) and Institute for Advanced Simulation (IAS-1), Forschungszentrum Jülich and JARA, Jülich, Germany

In our recent work [1], we addressed the occurrence of spin-resolved photoemission signal asymmetries in the Weyl type-II semimetal candidate WTe2. Here, we aim to understand the asymmetric spin texture of electrons photoemitted from surface and bulk states and its relation to the initial state of type-II Dirac semimetal PtTe2 with photon energy of hν = 21.22 eV at room temperature and at 50K. Our spin- and angle-resolved photoemission data were augmented by the one-step model of the photoemission within the spin-polarized relativistic Korringa-Kohn-Rostoker (SPR-KKR) Green’s function method of the Munich band structure software package. In order to extract information about the different contributions to the resulting spectral weight and spin polarization, the matrix-element used in our one-step model of photoemission calculations includes all experimental parameters such as photon energy, light polarization and geometry configurations.

[1] T. Heider et al., arXiv:2210.10870 (2022).