Magnetic Quantum Wire as a Spin Filter: An Exact Study

Abstract

We propose that a magnetic quantum wire composed of magnetic and non-magnetic atomic sites can be used as a spin filter for a wide range of applied bias voltage. We adopt a simple tight-binding Hamiltonian to describe the model where the quantum wire is attached to two semi-infinite one-dimensional non-magnetic electrodes. Based on single particle Green's function formalism all the calculations are performed numerically which describe two-terminal conductance and current through the wire. Our exact results may be helpful in fabricating mesoscopic or nano-scale spin filter.

6 pages, 5 figures

References in corpus (5)

• Tunable pure spin currents in a triple-quantum-dot ring
• Electron transport in a double quantum ring: Evidence of an AND gate
• Quantum transport in a mesoscopic ring: Evidence of an OR gate
• XOR gate response in a mesoscopic ring with embedded quantum dots
• A mesoscopic ring as a XNOR gate: An exact result

Cited by in corpus (8)

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• Spin-selective transmission through a single-stranded magnetic helix
• Curvature effect on spin polarization in a three-terminal geometry in presence of Rashba spin-orbit interaction
• Magnetic field induced metal-insulator transition in a Kagome Nanoribbon
• Spin-dependent Seebeck Effect in Aharonov-Bohm Rings with Rashba and Dresselhaus Spin-orbit Interactions
• Spin filter for arbitrary spins by substrate engineering
• Thermoelectric phenomena in an antiferromagnetic helix: Role of electric field
• Externally controlled selective spin transfer through a two-terminal bridge setup