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  1. Article ; Online: Magnetoresistive-coupled transistor using the Weyl semimetal NbP.

    Rocchino, Lorenzo / Balduini, Federico / Schmid, Heinz / Molinari, Alan / Luisier, Mathieu / Süß, Vicky / Felser, Claudia / Gotsmann, Bernd / Zota, Cezar B

    Nature communications

    2024  Volume 15, Issue 1, Page(s) 710

    Abstract: Semiconductor transistors operate by modulating the charge carrier concentration of a channel material through an electric field coupled by a capacitor. This mechanism is constrained by the fundamental transport physics and material properties of such ... ...

    Abstract Semiconductor transistors operate by modulating the charge carrier concentration of a channel material through an electric field coupled by a capacitor. This mechanism is constrained by the fundamental transport physics and material properties of such devices-attenuation of the electric field, and limited mobility and charge carrier density in semiconductor channels. In this work, we demonstrate a new type of transistor that operates through a different mechanism. The channel material is a Weyl semimetal, NbP, whose resistivity is modulated via a magnetic field generated by an integrated superconductor. Due to the exceptionally large electron mobility of this material, which reaches over 1,000,000 cm
    Language English
    Publishing date 2024-01-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-024-44961-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Disorder-Induced Magnetotransport Anomalies in Amorphous and Textured Co

    Molinari, Alan / Balduini, Federico / Rocchino, Lorenzo / Wawrzyńczak, Rafał / Sousa, Marilyne / Bui, Holt / Lavoie, Christian / Stanic, Vesna / Jordan-Sweet, Jean / Hopstaken, Marinus / Tchoumakov, Serguei / Franca, Selma / Gooth, Johannes / Fratini, Simone / Grushin, Adolfo G / Zota, Cezar / Gotsmann, Bernd / Schmid, Heinz

    ACS applied electronic materials

    2023  Volume 5, Issue 5, Page(s) 2624–2637

    Abstract: In recent times the chiral semimetal cobalt monosilicide (CoSi) has emerged as a prototypical, nearly ideal topological conductor hosting giant, topologically protected Fermi arcs. Exotic topological quantum properties have already been identified in ... ...

    Abstract In recent times the chiral semimetal cobalt monosilicide (CoSi) has emerged as a prototypical, nearly ideal topological conductor hosting giant, topologically protected Fermi arcs. Exotic topological quantum properties have already been identified in CoSi bulk single crystals. However, CoSi is also known for being prone to intrinsic disorder and inhomogeneities, which, despite topological protection, risk jeopardizing its topological transport features. Alternatively, topology may be stabilized by disorder, suggesting the tantalizing possibility of an amorphous variant of a topological metal, yet to be discovered. In this respect, understanding how microstructure and stoichiometry affect magnetotransport properties is of pivotal importance, particularly in case of low-dimensional CoSi thin films and devices. Here we comprehensively investigate the magnetotransport and magnetic properties of ≈25 nm Co
    Language English
    Publishing date 2023-04-25
    Publishing country United States
    Document type Journal Article
    ISSN 2637-6113
    ISSN (online) 2637-6113
    DOI 10.1021/acsaelm.3c00095
    Database MEDical Literature Analysis and Retrieval System OnLINE

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