SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 21: Spin-Dependent Phenomena in 2D

MA 21.8: Vortrag

Dienstag, 28. März 2023, 17:00–17:15, HSZ 403

Electrically Tunable Curie Temperature in a 2D Ferromagnetic Semiconductor — •Tania Mukherjee^1,2 and Soumya Jyoti Ray¹ — ¹Department of Physics, Indian Institute of Technology Patna, Bihta 801106, India — ²Institute of Optics and Atomic Physics, Technical University of Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany

Magnetic van der Waal’s nanocrystals with intrinsic magnetic anisotropy provide an ideal platform for exploring magnetism in the low-dimensional limit. We investigate the electronic and magnetic properties of a novel 2D material VClBr₂ by using spin polarised density functional theory calculations. We observe complex electronic and magnetic phase transitions, tunable bandgap, and extremely large enhancement of the Curie temperature under the application of strain (η) and electric field (Ez). A Monte Carlo approach to the resolution of the Ising model reveals that the Curie temperature (T_c) can reach up to 340K under the application of an E_z = 2.5 V/nm, a colossal enhancement of ∼ 6700% of its base value. The coexistence of high-temperature spin-ordering along with large magnetic anisotropic energy (MAE), high magnetic moment, tunable band gap, and excellent stability make single layer VClBr₂ a promising material for applications in an electric field driven spin gating, room temperature spintronics, and 2D spin circuit design.