Naslov
Spin polarization of graphene by magnetic proximity effect controlled by electric field

Autori
Bosnar, Mihovil ; Lončarić, Ivor ; Lazić, Predrag

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts / Biliškov, Nikola - Zagreb : Institut Ruđer Bošković, 2019, 41-41

ISBN
78-953-7941-32-1

Skup
Solid State Science and Research Meeting

Mjesto i datum
Zagreb, Hrvatska, 27.06.2019. - 29.06.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
magnetism ; surfaces ; 2D materials

Sažetak
We consider the spin polarization of graphene atop a ferromagnetic slab [1]. It was shown that, if graphene is separated from the slab by an insulating layer, graphene and the rest of the structure are bonded by van der Waals force which preserves graphene’s characteristic electronic structure but the degeneracy between the spin states of graphene is broken, meaning weak ferromagnetism is induced in graphene [1]. The spin splitting is caused by the overlap of the spin polarized orbitals of the substrate and the spin unpolarized states of graphene and hence can be modified by the external electric field which changes the energy positions of the orbitals relative to one another [1, 2]. However, the overlap also causes doping of graphene which is too large for reasonably small electric fields to cause significant change in polarization [1]. In an attempt to remove the unwanted doping, the insulating layer is replaced by a layer of gold or platinum atoms, to a degree of success. [1] P. Lazić, K. D. Belashchenko, I. Žutić, Phys. Rev. B. 93 (2014) 241401

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA