We present a unified description of zitterbewegung-like phenomena for electron and hole systems showing Rashba spin splitting as well as for electrons in single-layer and bilayer graphene. The former class of systems can be interpreted as “nonrelativistic” whereas the latter are often called “ultrarelativistic” so that our unified description indicates an interesting connection between these tw...

D. Mastrogiuseppe,1,2 A. Wong,3 K. Ingersent,3 S. E. Ulloa,1,2 and N. Sandler1,2 1Department of Physics and Astronomy, and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701-2979, USA 2Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany 3Department of Physics, University of Florida, P.O. Box 118440, Gaines...

In this paper we attempt to reconstruct one of the last projects of Volodya Geyler which remained unfinished. We study motion of a quantum particle in the plane to which a halfline lead is attached assuming that the particle has spin 1 2 and the plane component of the Hamiltonian contains a spin-orbit interaction of either Rashba or Dresselhaus type. We construct the class of admissible Hamilto...

Seung Ryong Park, Choong H. Kim, Jaejun Yu, Jung Hoon Han, Changyoung Kim Department of physics, University of Colorado at Boulder, Boulder, Colorado 80309, USA 2 Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea Department of Physics and BK21 Physics Research Division, Sungkyunkwan University, Suwon 440-746, Korea and Institute of Physics and Applied Physics,...

We study the coupled dynamics of spin and charge currents in a two-dimensional electron gas in the transport diffusive regime. For systems with inversion symmetry there are established relations between the spin Hall effect, the anomalous Hall effect and the inverse spin Hall effect. However, in two-dimensional electron gases of semiconductors like GaAs, inversion symmetry is broken so that the...

During last years the world-community of nano-electronics is engaged in a search of new physical principles, materials and technologies on which the quantum spin-transistor may be manufactured [1]. This anticipated device could become a base of the toolbox of quantum computations and help testing the constructions of various quantum networks. Basic principle of the spin-transistor was suggested...

the magnetoresistance of a one-dimensional electron gas in a metallic ferromagnetic nanowire containing two atomic-size domain walls has been investigated in the presence of spin-orbit interaction. the magnetoresistance is calculated in the ballistic regime, within the landauer-büttiker formalism. it has been demonstrated that the conductance of a magnetic nanowire with double domain walls can ...