Spin-helical detection in a semiconductor quantum device with ferromagnetic contacts
arXiv:2104.02884 · doi:10.1103/PhysRevB.106.115414
Abstract
Spin-helical states, which arise in quasi-one-dimensional (1D) channels with spin-orbital (SO) coupling, underpin efforts to realize topologically-protected quantum bits based on Majorana modes in semiconductor nanowires. Detecting helical states is challenging due to non-idealities present in real devices. Here we show by means of tight-binding calculations that by using ferromagnetic contacts it is possible to detect helical modes with high sensitivity even in the presence of realistic device effects, such as quantum interference. This is possible because of the spin-selective transmission properties of helical modes. In addition, we show that spin-polarized contacts provide a unique path to investigate the spin texture and spin-momentum locking properties of helical states. Our results are of interest not only for the ongoing development of Majorana qubits, but also as for realizing possible spin-based quantum devices, such as quantum spin modulators and interconnects based on spin-helical channels.
arXiv comment7 pages, 5 figures
References in corpus (38)
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Helical liquids and Majorana bound states in quantum wires
- Electronic spin transport and spin precession in single graphene layers at room temperature
- Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
- Basic obstacle for electrical spin-injection from a ferromagnetic metal into a diffusive semiconductor
- Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
- Kwant: a software package for quantum transport
- Observation of the fractional ac Josephson effect: the signature of Majorana particles
- Majorana Zero Modes and Topological Quantum Computation
- Exponential Protection of Zero Modes in Majorana Islands
- Electrical Detection of Spin Transport in Lateral Ferromagnet-Semiconductor Devices
- Tunneling Spin Injection into Single Layer Graphene
- Tunneling Spin Injection into Single Layer Graphene (Supplementary Information)
- Ballistic spin-polarized transport and Rashba spin precession in semiconductor nanowires
- Development of Quantum InterConnects for Next-Generation Information Technologies
- Electric Field Control of Spin Transport
- All-electric all-semiconductor spin field effect transistors
- Observation of a One-Dimensional Spin-Orbit Gap in a Quantum Wire
- All-Electric Quantum Point Contact Spin Valve
- Spin-orbit interaction in InSb nanowires
- Effect of Spin-Orbit Interaction and In-Plane Magnetic Field on the Conductance of a Quasi-One-Dimensional System
- Experimental and materials considerations for the topological superconducting state in electron and hole doped semiconductors: searching for non-Abelian Majorana modes in 1D nanowires and 2D heterostructures
- Zero-field Topological Superconductivity in Ferromagnetic Hybrid Nanowires
- Conductance-matrix symmetries of a three-terminal hybrid device
- Synthetic spin orbit interaction for Majorana devices
- Conductance through a helical state in an InSb nanowire
- Signatures of interaction-induced helical gaps in nanowire quantum point contacts
- Multi-mode Fabry-Pérot conductance oscillations in suspended stacking-faults-free InAs nanowires
- Spin-dependent Quantum Interference in Single-Wall Carbon Nanotubes with Ferromagnetic Contacts
- Conductance behavior in nanowires with spin-orbit interaction -- A numerical study
- Direct comparison of current-induced spin polarization in topological insulator Bi2Se3 and InAs Rashba states
- Giant gate-controlled proximity magnetoresistance in semiconductor-based ferromagnetic/nonmagnetic bilayers
- Spin transport in ferromagnet-InSb nanowire quantum devices
- Split-Channel Ballistic Transport in an InSb Nanowire
- Nonlocal Spin Dynamics in the Crossover from Diffusive to Ballistic Transport
- Integrating micromagnets and hybrid nanowires for topological quantum computing
- Spin filtering in germanium/silicon core/shell nanowires with pseudo-helical gap