Spin-polarized localization in a magnetized chain
arXiv:1807.02402 · doi:10.1038/s41598-019-42316-5
Abstract
We investigate a simple tight-binding Hamiltonian to understand the stability of spin-polarized transport of states with an arbitrary spin content in the presence of disorder. The general spin state is made to pass through a linear chain of magnetic atoms, and the localization lengths are computed. Depending on the value of spin, the chain of magnetic atoms unravels a hidden transverse dimensionality that can be exploited to engineer energy regimes where only a selected spin state is allowed to retain large localization lengths. An analysis is carried out to understand the roles played by the spin projections in different energy regimes of the range of states. We introduce a new measure, viz, a spin-resolved localization length for this purpose. We study uncorrelated disorder in the potential profile offered by the magnetic substrate or in the orientations of the magnetic moments concerning a given direction in space. Our results show that the spin filtering effect is robust against weak disorder and hence the proposed systems should be good candidates for experimental realizations of spin-selective transport.
arXiv comment12 pages, 7 figures
References in corpus (36)
- Spintronics: Fundamentals and applications
- Kondo Physics in a Single Electron Transistor
- A Tunable Kondo Effect in Quantum Dots
- Spinor Bose Condensates in Optical Traps
- Spin domains in ground state spinor Bose-Einstein condensates
- Spinor Bose-Einstein condensates
- Two-orbital SU(N) magnetism with ultracold alkaline-earth atoms
- A one-dimensional liquid of fermions with tunable spin
- Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism
- Exact SO(5) Symmetry in spin 3/2 fermionic system
- Ultracold fermions and the SU(N) Hubbard model
- Realization of SU(2)*SU(6) Fermi System
- Coreless vortex formation in a spinor Bose-Einstein condensate
- Quantum transport in Rashba spin-orbit materials: A review
- The Phase Diagrams of F=2 Spinor Bose Condensates
- Degenerate Fermi Gas of Sr
- Spinor Bosonic Atoms in Optical Lattices: Symmetry Breaking and Fractionalization
- Quantum tunneling across spin domains in a Bose-Einstein condensate
- Spin correlation and Discrete symmetry in Spinor Bose-Einstein Condensates
- Observation of localized flat-band modes in a quasi-one-dimensional photonic rhombic lattice
- Quantum Transport in Nonuniform Magnetic Fields: Aharonov-Bohm Ring as a Spin Switch
- Pairing of Fermions with Arbitrary Spin
- Metal-insulator transition in an aperiodic ladder network: an exact result
- Electrical Spin Injection in Multi-Wall carbon NanoTubes with transparent ferromagnetic contacts
- Anisotropic spin transport in two-terminal mesoscopic rings: the Rashba and Dresselhaus spin-orbit interactions
- Weak disorder expansion for localization lengths of quasi-1D systems
- Spin filter using a semiconductor quantum ring side-coupled to a quantum wire
- Critical properties of the metal-insulator transition in anisotropic systems
- Logical XOR gate response in a quantum interferometer: A spin dependent transport
- Spin filtering in a Rashba-Dresselhaus-Aharonov-Bohm double-dot interferometer
- Spin Current and Shot Noise in Single-Molecule Quantum Dots with a Phonon Mode
- Quantum criticality of spin-1 bosons in a 1D harmonic trap
- Flux driven and geometry controlled spin filtering for arbitrary spins in aperiodic quantum networks
- Localisation and finite-size effects in graphene flakes
- Spin filter for arbitrary spins by substrate engineering
- Spin filtering and switching action in a diamond network with magnetic-nonmagnetic atomic distribution