Programme

P.27 -- Posters, VCTP-50

Date: Tuesday, 5 August 2025

Time: 08:30 - 10:00

This computational research delves into the electronic, magnetic, and spin transport phenomena observed in rich spin penta-PdSe2 nanoribbons

Nguyen Hai Dang (1,2), Pham Thi Bich Thao (1), Nguyen Duy Khanh (3) and Nguyen Thanh Tien (1)

(1) Can Tho University; (2) Nam Can Tho University; (3) Van Lang University

Using spin-polarized DFT calculations combined with the non-equilibrium Green's function (NEGF) method, we investigated the geometric, electronic, magnetic, and spin transport properties of bare-edge and H-edge ZZ-p-PdSe2 nanoribbons across six distinct spin configurations. Our findings reveal the robust stability of these nanoribbons, a direct-gap semiconducting nature with varying spin-splitting bandgaps, and diverse magnetic behaviors ranging from ferromagnetic to antiferromagnetic depending on the spin configuration. Critically, the spin-resolved I-V curves highlight prominent negative differential resistance (NDR) and spin filtering (SF) effects, with detailed mechanisms elucidated through transmission spectra, carrier paths, and local density of states. These results provide a comprehensive understanding of penta-PdSe2 nanoribbons, offering valuable insights for the development of spintronic devices leveraging this emergent system.

Presenter: Nguyen Hai Dang