RT Journal Article
T1 Spin-dependent terahertz oscillator based on hybrid graphene superlattices
A1 Díaz García, Elena
A1 Miralles, K.
A1 Domínguez-Adame Acosta, Francisco
A1 Gaul, Christopher
AB We theoretically study the occurrence of Bloch oscillations in biased hybrid graphene systems with spin-dependent superlattices. The spin-dependent potential is realized by a set of ferromagnetic insulator strips deposited on top of a gapped graphene nanoribbon, which induce a proximity exchange splitting of the electronic states in the graphene monolayer. We numerically solve the Dirac equation and study Bloch oscillations in the lowest conduction band of the spin-dependent superlattice. While the Bloch frequency is the same for both spins, we find the Bloch amplitude to be spin dependent. This difference results in a spin-polarized ac electric current in the THz range.
PB American Institute of Physics
SN 0003-6951
YR 2014
FD 2014-09-08
LK https://hdl.handle.net/20.500.14352/33978
UL https://hdl.handle.net/20.500.14352/33978
LA eng
NO © 2014 AIP Publishing LLC. We thank E. Diez and Y. M. Meziani for helpful discussions. Work in Madrid was supported by MINECO (Project Nos. MAT2010-17180 and MAT2013-46308).
NO MINECO
DS Docta Complutense
RD 10 abr 2025