University of Wollongong
Browse

Room temperature giant and linear magnetoresistance in topological insulator Bi2Te3 nanosheets

Download (558.27 kB)
journal contribution
posted on 2024-11-13, 23:30 authored by Xiaolin WangXiaolin Wang, Yi Du, Shi DouShi Dou, Chao Zang
"Topological insulators, a new class of condensed matter having bulk insulating states and gapless metallic surface states, have demonstrated fascinating quantum effects. However, the potential practical applications of the topological insulators are still under exploration worldwide. We demonstrate that nanosheets of a Bi2Te3 topological insulator several quintuple layers thick display giant and linear magnetoresistance. The giant and linear magnetoresistance achieved is as high as over 600% at room temperature, with a trend towards further increase at higher temperatures, as well as being weakly temperature-dependent and linear with the field, without any sign of saturation at measured fields up to 13 T. Furthermore, we observed a magnetic field induced gap below 10 K. The observation of giant and linear magnetoresistance paves the way for 3D topological insulators to be useful for practical applications in magnetoelectronic sensors such as disk reading heads, mechatronics, and other multifunctional electromagnetic applications."

History

Citation

Wang, X., Du, Y., Dou, S. Xue. & Zang, C. (2012). Room temperature giant and linear magnetoresistance in topological insulator Bi2Te3 nanosheets. Physical Review Letters, 108 (26), 266806-1-266806-5.

Journal title

Physical Review Letters

Volume

108

Issue

26

Language

English

RIS ID

76210

Usage metrics

    Categories

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC