Half-metal phases in a quantum wire with modulated spin-orbit interaction
arXiv:1709.02217 · doi:10.1103/PhysRevB.96.205135
Abstract
We propose a spin valve device based on the interplay of a modulated spin-orbit interaction and a uniform external magnetic field acting on a quantum wire. Half-metal phases, where electrons with only a selected spin polarization exhibit ballistic conductance, can be tuned by varying the magnetic field. These half-metal phases are proven to be robust against electron-electron repulsive interactions. Our results arise from a combination of explicit band diagonalization, bosonization techniques and extensive DMRG computations.
5 pages, 4 figures
References in corpus (13)
- The ALPS project release 1.3: open source software for strongly correlated systems
- All-electric all-semiconductor spin field effect transistors
- Spin-selective Peierls transition in interacting one-dimensional conductors with spin-orbit interaction
- Fano-Rashba effect in a quantum wire
- Spin-orbital effects in magnetized quantum wires and spin chains
- Competing effects of interactions and spin-orbit coupling in a quantum wire
- Strongly modulated transmission of a spin-split quantum wire with local Rashba interaction
- Metal-insulator transition in a quantum wire driven by a modulated Rashba spin-orbit coupling
- Low-energy theory and RKKY interaction for interacting quantum wires with Rashba spin-orbit coupling
- Spin-orbit induced spin-density wave in a quantum wire
- Magnetically-controlled impurities in quantum wires with strong Rashba coupling
- Spin-orbit coupling and spectral function of interacting electrons in carbon nanotubes
- Ideal switching effect in periodic spin-orbit coupling structures