Regensburg 2025 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 9: Correlated Magnetism – Low-Dimensional Systems

TT 9.10: Vortrag

Montag, 17. März 2025, 17:30–17:45, H33

Investigation of the insulator to metal transition in the 2d van der Waals magnet FePSe₃ — •Saicharan Aswartham, Masoumeh Rahimkhani, Andreas Kreyssig, and Anna Böhmer — Experimentalphysik IV, Ruhr- Universität Bochum, 44801 Bochum, Germany

Layered magnetic van der Waals (vdW) materials offers an interesting playground for the investigation of correlated electronic ground states in two dimensions. FePSe₃ belongs to the family of transition metal phosphorus trichalcogenides TMPX₃ with an antiferromagnetic ground state with T_N=108 K. Interestingly, under the application of external pressure FePSe3 undergoes insulator to metal transition. Here, we present detailed synthesis and physical properties of Fe_1−xTM_xPSe₃ with different transition metal substitution. We furtheraim to investigate spin cross over behaviour with the application of chemical pressure in FePSe₃.

[1] Wang et al., Nat. Commun. 9, 1914 (2018).

[2] Selter et al., Phys. Rev. Mater. 5, 073401 (2021).

Keywords: Low dimensional systems, 2D van der Waals magnets; MPX3, Insulator to metal trasition