Quasiperiodic magnetic chain as a spin filter for arbitrary spin states

Abstract

We show that a quasiperiodic magnetic chain comprising magnetic atomic sites sequenced in Fibonacci pattern can act as a prospective candidate for spin filters for particles with arbitrary spin states. This can be achieved by tuning a suitable correlation between the amplitude of the substrate magnetic field and the on-site potential of the magnetic sites, which can be controlled by an external gate voltage. Such correlation leads to a spin filtering effect in the system, allowing one of the spin components to completely pass through the system while blocking the others over the allowed range of energies. The underlying mechanism behind this phenomena holds true for particles with any arbitrary spin states S = 1, 3/2, 2, . . ., in addition to the canonical case of spin-half particles. Our results open up the interesting possibility of designing a spin demultiplexer using a simple quasiperiodic magnetic chain system. Experimental realization of this theoretical study might be possible by using ultracold quantum gases, and can be useful in engineering new spintronic devices.

arXiv comment8 pages, 5 figures, published version

References in corpus (27)

• Spin pumping and magnetization dynamics in metallic multilayers
• A one-dimensional liquid of fermions with tunable spin
• Electric Field Control of Spin Transport
• All-electric all-semiconductor spin field effect transistors
• An SU(N) Mott insulator of an atomic Fermi gas realized by large-spin Pomeranchuk cooling
• Spin-Selective Transport of Electron in DNA Double Helix
• Quantum Dot as Spin Filter and Spin Memory
• Spin interference effects in ring conductors subject to Rashba coupling
• Experimental Realization of a Quantum Spin Pump
• A two-dimensional spin field-effect transistor
• Large magnetoresistance using hybrid spin filter devices
• Perfect spin-fillter and spin-valve in carbon atomic chains
• Spin separation in cyclotron motion
• Confinement and Superfluidity in one-dimensional Degenerate Fermionic Cold Atoms
• Pairing of Fermions with Arbitrary Spin
• Damagnetization cooling of a gas
• Rashba effect induced localization in quantum networks
• Effect of gate voltage on spin transport along $\alpha$-helical protein
• Spin filtering by a periodic nanospintronic devices
• Spin filtering due to quantum interference in periodic mesoscopic networks
• Ladder network as a mesoscopic switch: An exact result
• Spin Filter Effects in Mesoscopic Ring Structures
• Engineering bands of extended electronic states in a class of topologically disordered and quasiperiodic lattices
• Flux driven and geometry controlled spin filtering for arbitrary spins in aperiodic quantum networks
• Absolutely continuous energy bands in the electronic spectrum of quasiperiodic ladder networks
• Spin filter for arbitrary spins by substrate engineering
• Spin filtering and switching action in a diamond network with magnetic-nonmagnetic atomic distribution