Tunnelling of Polarized Electrons in Magnetic Wires

Details Tunnelling of Polarized Electrons in Magnetic Wires Tunnelling of Polarized Electrons in Magnetic Wires

2001-11-16

arxiv.org/abs/cond-mat/0111315v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages

Scientific paper

10.1103/PhysRevB.65.193303

We investigate the tunnelling between an electronic gas with two different velocities $V_\uparrow \neq V_\downarrow$ and a regular metal. We find that at the interface between the two systems that the tunnelling conductance for spin up and spin down are different. As a result a partly polarized gas (``magnetic wire'') is obtained. This result is caused by the e-e interaction, $g_2'' - g_1'' \neq 0$, which in the presence of $V_\uparrow \neq V_\downarrow$ gives rise to two different tunnelling exponents.

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