  We study the emergence of Majorana zero modes (MZMs) at the ends of a finite
double zigzag honeycomb nanoribbon (zHNR). We show that a double zHNR geometry
can host spin-polarized MZMs at its ends. We considered a minimal model
composed by first nearest neighbor hopping, Rashba spin-orbit coupling (RSOC),
p-wave superconducting pairing, and an applied external magnetic field (EMF).
The energy spectrum regions with either spin up or down MZMs belong to distinct
topological phase transitions characterized by their corresponding winding
numbers and can be accessed by tunning the chemical potential of the
nanoribbons. Hybrid systems constituted by zHNRs deposited on conventional
s-wave superconductors are potential candidates for experimentally realizing
the proposal. The spin's discrimination of MZMs suggests a possible route for
performing topological-conventional qubit operations using Majorana
spintronics.
