Dresden 2017 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 14: 2D Materials Beyond Graphene II (jointly with CPP)

DS 14.3: Vortrag

Montag, 20. März 2017, 16:30–16:45, REC/PHY C213

Direct observation of the conduction bands of single-layer WS₂ on Au(111) — •Philipp Eickholt¹, Marcel Holtmann¹, Charlotte Sanders², Philip Hofmann², and Markus Donath¹ — ¹Physics Institute, University of Münster, Germany — ²Department of Physics and Astronomy, University of Aarhus, Denmark

In the field of 2D materials, single-layer transition metal dichalogenides, especially MoS₂, WS₂, MoSe₂ and WSe2₂, are among the promising materials due to their exceptional optical and electronic properties [1]. The key to understanding these properties is a profound knowledge of the electronic structure. While there have been many studies of the occupied electronic structure, the crucial information about the dispersion and spin structure of the conduction bands is still missing. Spin- and angle-resolved inverse photoemission (SRIPE) [2] is the ideal technique to study dispersion and spin structure of the unoccupied electronic structure. In this talk we present a SRIPE study of the conduction bands of single-layer WS₂ grown [3] on Au(111).

[1] D. Xiao et al., Phys. Rev. Lett. 108, 196802 (2012)

[2] S.D. Stolwijk et al., Rev. Sci. Instrum. 85, 013306 (2014)

[3] M. Dendzik et al., Phys. Rev. B 92, 245442 (2015)