Spin current and rectification in one-dimensional electronic systems

Details Spin current and rectification in one-dimensional electronic systems Spin current and rectification in one-dimensional electronic systems

2006-10-30

arxiv.org/abs/cond-mat/0610847v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevB.76.085119

Spin and charge currents can be generated by an ac voltage through a one-channel quantum wire with strong electron interactions in a static uniform magnetic field. In a certain range of low voltages, the spin current can grow as a negative power of the voltage bias as the voltage decreases. The spin current expressed in units of hbar/2 per second can become much larger than the charge current in units of the electron charge per second. The system requires neither spin-polarized particle injection nor time-dependent magnetic fields.

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