Spin-current diode with a ferromagnetic semiconductor
arXiv:1502.03599 · doi:10.1063/1.4920988
Abstract
Diode is a key device in electronics: the charge current can flow through the device under a forward bias, while almost no current flows under a reverse bias. Here we propose a corresponding device in spintronics: the spin-current diode, in which the forward spin current is large but the reversed one is negligible. We show that the lead/ferromagnetic quantum dot/lead system and the lead/ferromagnetic semiconductor/lead junction can work as spin-current diodes. The spin-current diode, a low dissipation device, may have important applications in spintronics, as the conventional charge-current diode does in electronics.
5 pages, 3 figures
References in corpus (9)
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Quantum Spin Hall Insulator State in HgTe Quantum Wells
- Dissipationless Quantum Spin Current at Room Temperature
- Graphene Spintronics
- Direct electronic measurement of the spin Hall effect
- Disorder-induced enhancement of transport through graphene p-n junctions
- Quantum Dot as a Spin--Current Diode
- Ballistic Spin Resonance
- Electrically Tunable Spin Polarization in a Carbon-Nanotube Spin Diode