Regensburg 2025 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 10: Spin-Dependent Phenomena in 2D (joint session MA/HL)
HL 10.6: Talk
Monday, March 17, 2025, 16:15–16:30, H19
Spin model of graphene triangulenes embedded in hexagonal boron nitride — •Dániel Tibor Pozsár1,3,4,5, László Oroszlány1,2,3, and Viktor Ivády1,4,5,6 — 1Department of Physics of Complex Systems, Eötvös Loránd University, Egyetem tér 1-3, H-1053 Budapest, Hungary — 2Wigner Research Centre for Physics, Konkoly-Thege M. út 29-33, H-1121 Budapest, Hungary — 3TRILMAX Consortium, Twinning, Horizon Europe, Budapest, Hungary — 4QUEST projec, Twinning, Horizon Europe, Budapest, Hungary — 5MTA*ELTE Lendület "Momentum" NewQubit Research Group, Pázmány Péter, Sétány 1/A, 1117 Budapest, Hungary — 6Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
We are investigating triangulene shaped substitutional defects in hexagonal boron nitride filled with carbon atoms. We show how the triangulene shaped defects encompass magnetic moments and with ab initio methods we build Heisenberg like classical spin models representing their interactions. We show how different lattice terminations and sizes impact the magnetic properties of the system.
Keywords: graphene; triangulene; hBN; Heisenberg; DFT