2015/02/12 by Qing‐Feng Sun, Qing-Feng Sun, X. C. Xie · 15 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Biasing #Condensed matter physics #Current (fluid) #Diode #Electron #Ferromagnetism #Materials science #Nanotechnology #Optoelectronics #Physics #Quantum and electron transport phenomena #Semiconductor device #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Spin transistor #Spintronics #Surface and Thin Film Phenomena #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.4920988
published in Applied Physics Letters 106(18) (American Institute of Physics) · 5 pages, 3 figures
arxiv created 2015/02/12 · openalex publication_date 2015/05/04 · arxiv updated 2015/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.