Spatial Selected Spin Filtering Effect in Z-Shaped MoS₂ Nanoribbon

Abstract

Due to the gapless between any two successive subbands with the same spin, the spin polarization in uniform MoS2 zigzag nanoribbon (MoS2-ZR) is weak. Here, through configuring Z-shaped structure, we realize 100% spin polarization in MoS2-ZR with only exchange field. The filtered spin electrons transmit along a specified edge of the device. This phenomenon is the result of the combined effect of the localized edge states and structure induced inversion of the Mo-edge and S-edge. In our calculation the fully spin polarization appears in several energy regions, so this Z-shaped MoS2-ZRs can be used in making spintronic devices.INDEX TERMS Spin filtering effect, MoS2 nanoribbon, spintronic device. I.

Spin‐Polarized Edge‐State Transport in L‐Shaped MoS2 Nanodevice Modulated by Exchange Field and Electric Field

“…[ 22–26 ] In addition to exotic features of 2D sheet and quasi‐1D nanoribbon of the systems, constructed junctions, such as nanoconstriction, Z‐shaped junctions, and multiterminals, have been investigated to possess various effects in the spin and charge transport with the external fields. [ 27–32 ] As the bottom‐up synthesis of 2D materials with atomic precision control of their edge and width, [ 33–37 ] these geometric configuration sensitive junctions could be the basic building components of TMDs nanocircuits in the engineering application.…”