Electric Field-Induced Charge Carrier Density Driven Metal-to-Insulator Phase Transition in Few-Layered As-bP Field-effect Transistor

ORAL

Abstract

Metal-to-insulator phase transitions (MIT) in 2D Systems is a controversial topic in condensed matter physics due to the fact that it challenges the prediction made by Abrahams et al., which states that two-dimensional disordered electronic systems must be insulating (Phys. Rev. Lett. 42, 673 (1979)). Recent studies1,2 have indicated a possible MIT in few-layered transition metal dichalcogenide such as MoS2, ReS2 and CuIn7Se113, but the mechanism leading to the MIT still remains enigmatic. We will present a possible MIT in few-layered As-doped black phosphorus from conductivity measurements in field effect transistors measured from 300 K to 2 K reveal an insulating-to-metallic-like phase transition when the carrier density is tuned via an applied gate voltage. The nature of the phase transition will be discussed with existing theoretical model. 1Nat Commun. 2018; 9: 2052, 2 Nano Lett. 2015, 15, 12, 8377, 3ACS Nano 2019, 13, 11, 13413

*Center for Nanoscale Materials at Argonne National Lab, a U.S. Department of Energy (DOE) Office of Science User Facility, and supported by Contract No. DE-AC02-06CH11357. NSF-PREM NSF-DMR #1826886, HBCU-UP EiR NSF DMR # 1900692 and NSF-DMR # 1807969. National High Magnetic Field Laboratory, supported by NSF DMR-1644779 and the State of Florida.

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Presenters

  • Nihar Pradhan

    • Department of Chemistry, Physics and Atmospheric Science, Jackson, MS, USA, Jackson State University
    • Physics, Jackson State University

Authors

  • Nihar Pradhan

    • Department of Chemistry, Physics and Atmospheric Science, Jackson, MS, USA, Jackson State University
    • Physics, Jackson State University

  • Carlos G Garcia

    • Physics, National High Magnetic Field Laboratory and Florida State University
    • National High Magnetic Field Laboratory
    • Florida State

  • Daniel Rosenmann

    • Center for Nanoscale Materials, 9700 S-Cass Avenue, Lemont, IL-60439, USA, Argonne National Laboratory

  • Ralu Divan

    • Center for Nanoscale Materials, 9700 S-Cass Avenue, Lemont, IL-60439, USA, Argonne National Laboratory

  • Anirudha Sumant

    • Center for Nanoscale Materials, 9700 S-Cass Avenue, Lemont, IL-60439, USA, Argonne National Laboratory

  • Priyanka Das

    • Department of Chemistry, Physics and Atmospheric Science, Jackson, MS, USA, Jackson State University

  • Dharmaraj Raghavan

    • Department of Chemistry, Howard University, Washington DC 20059, Howard University
    • Chemistry, Howard University

  • Alamgir Karim

    • University of Houston
    • Department of Chemical and Biomolecular Engineering, University of Houston
    • Polymer, NIST
    • Department of Chemical & Biomolecular Engineering, S333 Engineering, 4726 Calhoun Rd, Houston, TX, University of Houston
    • Chemical and Biomolecular Engineering, University of Houston

  • Stephen A McGill

    • Condensed Matter Science, National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory
    • Florida State

  • Luis Balicas

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Florida State University
    • National High Magnetic Field Lab
    • Condensed Matter Science, National High Magnetic Field Laboratory