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Layered transition metal dichalcogenides are currently intensively investigated due to their opto-electronic, superconducting and topological properties as well as their potential usage as mono-layer building blocks. However, despite their layered nature they often exhibit three dimensional (3D) properties in the bulk. Surprisingly, in semiconducting 2H-MoTe₂ long-range magnetic order of unknown origin has recently been observed at low temperature [1]. Here we present the full 3D band structure of 2H-MoTe₂, determined with soft X-ray ARPES. We find a pronounced k_z dispersion in most bands, consistent with ab-inito calculations, proving the three dimensional character of this material.
Furthermore, we present results of beta detected ⁸Li NMR measurements and show that the spin-lattice relaxation of the implanted Li ions is inconsistent with long range magnetic order, but supports the presence of magnetic fluctuations. We also find signatures of Li diffusion below room temperature, indicating a potential application in Li battery materials.

[1] Z. Guguchia, et. al., arXiv:1711.05392v2 (2017)