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arXiv · 0706.2761

Spin current and rectification in Luttinger liquids

Bernd Braunecker·D. E. Feldman·Feifei Li
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Abstract

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 non-magnetic 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 $\hbar/2$ 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.

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Bernd Braunecker, D. E. Feldman, Feifei Li. 2007-06-19. Spin current and rectification in Luttinger liquids. https://doi.org/10.1103/physrevb.76.085119

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