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Signature of Large-Gap Quantum Spin Hall State in the Layered Mineral Jacutingaite

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F20%3A00000113" target="_blank" >RIV/00025798:_____/20:00000113 - isvavai.cz</a>

  • Result on the web

    <a href="https://dx.doi.org/10.1021/acs.nanolett.0c01499" target="_blank" >https://dx.doi.org/10.1021/acs.nanolett.0c01499</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1021/acs.nanolett.0c01499" target="_blank" >10.1021/acs.nanolett.0c01499</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Signature of Large-Gap Quantum Spin Hall State in the Layered Mineral Jacutingaite

  • Original language description

    Quantum spin Hall (QSH) insulators host edge states,where the helical locking of spin and momentum suppressesbackscattering of charge carriers, promising applications from low-power electronics to quantum computing. A major challenge forapplications is the identification of large gap QSH materials, whichwould enable room temperature dissipationless transport in their edgestates. Here we show that the layered mineral jacutingaite (Pt2HgSe3)is a candidate QSH material, realizing the long sought-after Kane&#8722;Mele insulator. Using scanning tunneling microscopy, we measure aband gap in excess of 100 meV and identify the hallmark edge states.By calculating the&#61530;2invariant, we confirm the topological nature ofthe gap. Jacutingaite is stable in air, and we demonstrate exfoliationdown to at least two layers and show that it can be integrated intoheterostructures with other two-dimensional materials. This adds a topological insulator to the 2D quantum material library.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    21001 - Nano-materials (production and properties)

Result continuities

  • Project

    <a href="/en/project/GA18-15390S" target="_blank" >GA18-15390S: Experimental and mineralogical study of selected platinum-group chalcogenides and alloys</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Nano Letters

  • ISSN

    1530-6984

  • e-ISSN

  • Volume of the periodical

    20

  • Issue of the periodical within the volume

    7

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    7

  • Pages from-to

    5207−5213

  • UT code for WoS article

    000548893200067

  • EID of the result in the Scopus database

    2-s2.0-85088208184