PENGARUH MEDAN LISTRIK TERHADAP SIFAT LISTRIK DAN MAGNETIK MATERIAL NiBr2 MONOLAYER BERBASIS DENSITY FUNCTIONAL THEORY

BAGUS NURYASIN, . (2022) PENGARUH MEDAN LISTRIK TERHADAP SIFAT LISTRIK DAN MAGNETIK MATERIAL NiBr2 MONOLAYER BERBASIS DENSITY FUNCTIONAL THEORY. Sarjana thesis, UNJIVERSITAS NEGERI JAKARTA.

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Abstract

Nikel dibromida NiBr2 monolayer telah dianggap sebagai kandidat material yang menjanjikan untuk aplikasi spintronik karena struktur kristal, elektronik, dan magnetiknya. Penerapan medan listrik eksternal untuk mengontrol sifat listrik dan magnet sangat penting untuk aplikasi perangkat spintronik. Pada penelitian ini, telah dilakukan perhitungan non-kolinier dengan menggunakan teori fungsi kerapatan (DFT) untuk mengetahui pengaruh interaksi spin-orbit dan medan listrik eksternal pada monolayer NiBr2. Hal ini menunjukkan bahwa interaksi spin-orbit mengurangi celah energi di titik Γ dan menunjukkan bahwa ada transisi dari semikonduktor tidak langsung ke logam dan menghilangkan sifat magnetik dengan menerapkan medan listrik eksternal. Temuan kami menunjukkan bahwa interaksi spin-orbit dan medan listrik eksternal memainkan peran penting dalam sifat material NiBr2 monolayer, terutama untuk merancang perangkat spintronik. *********************************** Nickel dibromide NiBr2 monolayer has been considered as promising materials candidate for spintronic applications due their crystal, electronic, and magnetic structure. Application of an external electric field to control electrical and magnetic properties is extremely important for spintronic device application. In this study, the first principle of non-collinearity was calculated using density functional theory (DFT) to investigate the effect of spin-orbit interaction and external electric field on the NiBr2 monolayer. This shows that the spin-orbit interaction reduces the energy gap at point Γ and indicates that there is a transition from an indirect semiconductor to a metal and it removes the magnetic properties by applying an external electric field. Furthermore, spin splitting was found after combining spinorbit interactions and electric fields. Our findings suggest that spin-orbit interactions and external electric fields play an important role in the material properties of NiBr2 monolayers, especially for designing spintronic devices.

Item Type:	Thesis (Sarjana)
Additional Information:	1). Dr. Teguh Budi Prayitno, M.Si.; 2). Riser Fahdiran, M.Si.
Subjects:	Sains > Fisika
Divisions:	FMIPA > S1 Fisika
Depositing User:	sawung yudo
Date Deposited:	29 Oct 2024 07:56
Last Modified:	29 Oct 2024 07:56
URI:	http://repository.unj.ac.id/id/eprint/51804

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