Berlin 2015 – scientific programme
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O: Fachverband Oberflächenphysik
O 13: Electronic Structure of Surfaces II
O 13.10: Talk
Monday, March 16, 2015, 17:30–17:45, MA 041
Microscopic theory of the residual surface resistivity of Rashba electrons — •Juba Bouaziz1, Stefan Blügel1, Hiroshi Ishida2, and Samir Lounis1 — 1Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, D-52425 Jülich, Germany — 2College of Humanities and Sciences, Nihon University, Sakura-josui, Tokyo 156, Japan
A microscopic expression of the residual electrical resistivity tensor is derived in linear response theory for Rashba electrons scattering at a magnetic impurity with cylindrical or non-cylindrical potential. We investigated the specific case of an Fe adatom deposited on Au(111) surface [1] and studied the evolution of the diagonal and off-diagonal elements of the resistivity tensor as function of the magnetization direction of the impurity and of the spin-orbit strength. We found that the longitudinal residual resistivity leads to an anomalous magneto-resistance while the transversal one to a planar Hall effect. In the limit of no spin-orbit interaction and a non-magnetic impurity of cylindrical symmetry the expression of the residual resistivity of a two-dimensional electron-gas has the same simplicity and form as for the three-dimensional electron gas [2] and can also be expressed in terms of scattering phase shifts.
[1] S. Lounis et al. Phys. Rev. Lett. 108, 207202 (2012)
[2] J. Friedel, NuovoCimento Suppl. 7, 287 (1958)
This work is supported by the HGF-YIG Programme VH-NG-717 (Functional Nanoscale Structure and Probe Simulation Laboratory).