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Adiabatic quantum pumping of a desired ratio of spin current to charge current

Sungjun Kim·Kunal K. Das·Ari Mizel
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Abstract

We present a prescription for generating pure spin current or spin selective current, based on adiabatic quantum pumping in a tight-binding model of a one dimensional conductor. A formula for the instantaneous pumped current is derived without introducing the scattering matrix. Our calculations indicate that some pumping cycles produce the maximum value 2 of pumped spin while others reverse the direction of current as a result of small alterations of the pumping cycle. We find pumping cycles which produce essentially any ratio of spin current to charge current.

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Sungjun Kim, Kunal K. Das, Ari Mizel. 2006-01-11. Adiabatic quantum pumping of a desired ratio of spin current to charge current. https://doi.org/10.1103/physrevb.73.075308

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