Jonas Krieger
(Paul Scherrer Institut)
Layered transition metal dichalcogenides are intensively investigated due to their rich optoelectronic, superconducting and topological properties and their potential usage as mono-layer building blocks. Surprisingly, in semiconducting 2H-MoTe$_2$ long-range magnetic order of unknown origin has recently been observed [1]. Here we present the full 3D band structure of 2H-MoTe$_2$, determined with soft X-ray ARPES. We find a pronounced k$_z$ dispersion in most bands, consistent with ab-inito calculations. Furthermore, we present results of beta detected $^8$Li NMR measurements and show that the spin-lattice relaxation of the implanted Li ions is inconsistent with ferromagnetic order. Instead, our results suggest a magnetic structure that is coupled antiferromagnetic across the van der Waals gap.
[1] Z. Guguchia, et. al., Sci. Adv. 4, eaat3672 (2018)
Jonas Krieger
(Paul Scherrer Institut)
Igor P. Rusinov
(Tomsk State University)
Niels B. M. Schröter
(Paul Scherrer Institut)
Sourabh Barua
(University of Warwick)
Pabitra K. Biswas
(Rutherford Appleton Laboratory)
Aris Chatzichristos
(University of British Columbia)
Derek Fujimoto
(University of British Columbia)
Zurab Guguchia
(Paul Scherrer Institut)
Stefan Holenstein
(Paul Scherrer Institut)
Victoria L. Karner
(University of British Columbia)
Ryan M. L. McFadden
(University of British Columbia)
John O. Ticknor
(University of British Columbia)
W. Andrew MacFarlane
(University of British Columbia)
Robert F. Kiefl
(University of British Columbia)
Geetha Balakrishnan
(University of Warwick)
Evgueni V. Chulkov
(Donostia International Physics Center)
Dr
Vladmir N. Strocov
(Paul Scherrer Institut)
Zaher Salman
(Paul Scherrer Institut)
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