GaMnAs Ferromagnetic Single Electron Transistor Nano-devices

ORAL

Abstract

Mn-doped GaAs (or GaMnAs) offers opportunities to demonstrate both new device concepts with added functionality and new phenomena in condensed matter physics, since it is both a ferromagnet and a semiconductor. We will present our recent results on fabricating and characterizing GaMnAs-based single electron transistor (SET) devices. The resistance of these deep-nanoscale devices can be manipulated either by varying the applied voltage or via an external magnetic field. The nano-devices were prepared using electron-beam lithography and wet chemical etching. The magnetoresistance of the devices was as high as 40{\%} at 4.2 K and the behavior was strikingly different from previous results reported in literature.

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Authors

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Carla Benton

    Fratii Buzesti College, Craiova, Romania, Cleveland State University, University of Gothenburg, Sweden, Case Western Reserve University, HISKP Universitaet Bonn, IKP-3 Forschungszentrum Juelich, IAS-4 Forschungszentrum Juelich, Ruhr-Universitaet Bochum, IUPUI, Miami University, Physics Department, Kent State University, LCI, Kent State University, National High Magnetic Field Lab, Brookhaven National Laboratory, University of Wisconsin Oshkosh, The University of Akron

  • Khalid Eid

    Miami University