Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-12-04
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures, PACS: 72.25.-b, 72.20.My, 73.50.Jt, to appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.74.245314
We show that a nanometric four-probe ballistic junction can be used to check the presence of a transverse spin Hall current in a system with a Spin Orbit coupling not of the Rashba type, but rather due to the in-plane electric field. Indeed, the spin Hall effect is due to the presence of an effective small transverse magnetic field corresponding to the Spin Orbit coupling generated by the confining potential. The strength of the field and the junction shape characterize the quenching Hall regime, usually studied by applying semi-classical approaches. We discuss how a quantum mechanical relativistic effect, such as the Spin Orbit one, can be observed in a low energy system and explained by using classical mechanics techniques.
Bellucci Stefano
Onorato Pasquale
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