Condensed Matter Physics Seminar
2 p.m., Thursday, November 18, 2004
Room 1201, Physics Building
Spin transport in one dimensional systems
Christina Bena
(UCLA)
Abstract: In the past years there has been a lot of interest in the
field of spintronics, due especially to the many possible applications of
spin-polarized transport. I will start by briefly reviewing the advantages of
spin transport over conventional charge transport, especially in clean one
dimensional systems such as carbon nanotubes. I will then describe the
properties of spin transport in interacting one dimensional systems
characterized by the Luttinger liquid theory. The interactions can have quite
dramatic effects, yielding spin diffusion and precession, and also modifying the
characteristics of spin injection. As possible applications, I will first
describe how one can detect entanglement through spin current correlations in a
setup consisting of a superconductor coupled to two carbon nanotubes. Also I
will describe spin pumping from a ferromagnet with time dependent magnetization
into a Luttinger liquid.
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Host: Das Sarma
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