2006/10/31 by Bernd Braunecker, D. E. Feldman, Feifei Li
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Charge (physics) #Condensed matter physics #Current (fluid) #Electron #Magnetic field #Molecular Junctions and Nanostructures #Physics #Quantum and electron transport phenomena #Quantum mechanics #Rectification #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Voltage #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.76.085119
published as Phys. Rev. B 76, 085119 (2007) · 5 pages, 2 figures
arxiv created 2007/04/02 · openalex publication_date 2007/08/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate that spin current can be generated by an ac voltage in a one-channel quantum wire with strong repulsive electron interactions in the presence of a nonmagnetic impurity and uniform static magnetic field. In a certain range of voltages, the spin current can exhibit a power dependence on the ac voltage bias with a negative exponent. The spin current expressed in units of \ensuremathℏ∕2 per second can become much larger than the charge current in units of the electron charge per second. The spin current generation requires neither spin-polarized particle injection nor time-dependent magnetic fields.