Magnetic-Field Induced Metal-Insulator Transition in SrTiO<sub>3-y</sub>

ORAL

Abstract

The effect of magnetic field on the electrical resistivity of two specimens of SrTiO3-y will be reported. The specimens are metallic in the range 2 K < T < 295 K. Their charge-carrier concentrations are n = 8.6x1016 and 2.0x1017 cm-3. Magnetic field induces a metal-insulator transition in both specimens. The magnetic field alters the quantization scheme of the charge-carriers due to the formation of cyclotron orbits. As a result, the electrons enter quantized Landau levels. The metal-insulator transition will be interpreted within this framework.

*This work is based upon support by the FAPESP (2019/12798-3), FAPEMIG, CNPq (308135/2017-2), CAPES, and the USDOE, Office of Science-BES (DE- SC0016156).

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Presenters

  • John J Neumeier

    • Montana State University

Authors

  • John J Neumeier

    • Montana State University

  • Felipe S Oliveira

    • Instituto de Física Gleb Wataghin (IFGW) - Unicamp

  • Carlos A. M. dos Santos

    • Escola de Engenharia de Lorena, USP-Lorena

  • Mario S da Luz

    • Universidade Federal do Triangulo Mineiro