Influence of hydrostatic pressure on the diluted magnetic semiconductor Sb$_{2-x}$Cr$_{x}$Te$_{3}$

POSTER

Abstract

Currently, there is a great deal research activity on the incorporation of magnetic ions into semiconductors to produce ferromagnetism. These diluted magnetic semiconductors (DMSs) are of interest both to theorists, because of their unusual mechanisms of magnetic behavior, and to experimentalists, because the manipulation of spin in addition to charge promises devices based on spin polarized transport. We have investigated electrical transport properties of bulk single crystals of the ferromagnetic DMS Sb$_{2-x}$Cr$_{x}$Te$_{3}$ under varying pressure (0 GPa to 1.2 GPa), temperature (2 K to 300 K), and magnetic fields (0 T to 6 T). High pressure measurements afford a reversible way to tune both the electronic structure and magnetic interactions of these materials. Assuming a Curie temperature T$_{C}$ model based on RKKY indirect spin exchange we seek to observe how pressure and carrier concentration relate to the T$_{C}$ in this material. We show that both T$_{C}$ and carrier concentration exhibit increasing trends as hydrostatic pressure is increased. This work was supported by the Research Corporation.

Authors

  • Vishal Pandya

    Plasma Dynamics Corp., Department of Chemistry, University of Calabria, P. Bucci-15c, 87036 Rende (CS), ITALY, Air Force Institute of Technology, Gothenburg University, Sweden, Denison University, Department of Physics, University of Notre Dame, Department of Physics, John Carroll University, Department of Chemistry, The University of Akron, Department of Phyiscs, The University of Akron, Faculty of Chemical Technology, University of Pardubice, Czech Republic, Johns Hopkins University, Baltimore MD, Kent State University, Kent OH, University of Iowa, Physics Dept., Cleveland State University, Ohio State University, Rochester Institute of Technology, The Ohio State University, University of Akron, NASA Glenn Research Center, National Center For Space Exploration Research, Penn State College of Medicine, Department of Physics, Kent State University

  • Vishal Pandya

    Plasma Dynamics Corp., Department of Chemistry, University of Calabria, P. Bucci-15c, 87036 Rende (CS), ITALY, Air Force Institute of Technology, Gothenburg University, Sweden, Denison University, Department of Physics, University of Notre Dame, Department of Physics, John Carroll University, Department of Chemistry, The University of Akron, Department of Phyiscs, The University of Akron, Faculty of Chemical Technology, University of Pardubice, Czech Republic, Johns Hopkins University, Baltimore MD, Kent State University, Kent OH, University of Iowa, Physics Dept., Cleveland State University, Ohio State University, Rochester Institute of Technology, The Ohio State University, University of Akron, NASA Glenn Research Center, National Center For Space Exploration Research, Penn State College of Medicine, Department of Physics, Kent State University

  • Vishal Pandya

    Plasma Dynamics Corp., Department of Chemistry, University of Calabria, P. Bucci-15c, 87036 Rende (CS), ITALY, Air Force Institute of Technology, Gothenburg University, Sweden, Denison University, Department of Physics, University of Notre Dame, Department of Physics, John Carroll University, Department of Chemistry, The University of Akron, Department of Phyiscs, The University of Akron, Faculty of Chemical Technology, University of Pardubice, Czech Republic, Johns Hopkins University, Baltimore MD, Kent State University, Kent OH, University of Iowa, Physics Dept., Cleveland State University, Ohio State University, Rochester Institute of Technology, The Ohio State University, University of Akron, NASA Glenn Research Center, National Center For Space Exploration Research, Penn State College of Medicine, Department of Physics, Kent State University

  • Vishal Pandya

    Plasma Dynamics Corp., Department of Chemistry, University of Calabria, P. Bucci-15c, 87036 Rende (CS), ITALY, Air Force Institute of Technology, Gothenburg University, Sweden, Denison University, Department of Physics, University of Notre Dame, Department of Physics, John Carroll University, Department of Chemistry, The University of Akron, Department of Phyiscs, The University of Akron, Faculty of Chemical Technology, University of Pardubice, Czech Republic, Johns Hopkins University, Baltimore MD, Kent State University, Kent OH, University of Iowa, Physics Dept., Cleveland State University, Ohio State University, Rochester Institute of Technology, The Ohio State University, University of Akron, NASA Glenn Research Center, National Center For Space Exploration Research, Penn State College of Medicine, Department of Physics, Kent State University