Near-room-temperature Chern insulator and Dirac spin-gapless semiconductor: nickel chloride monolayer

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10368323" target="_blank" >RIV/00216208:11310/17:10368323 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1039/c6nr08522a" target="_blank" >https://doi.org/10.1039/c6nr08522a</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c6nr08522a" target="_blank" >10.1039/c6nr08522a</a>

Result language
angličtina
Original language name
Near-room-temperature Chern insulator and Dirac spin-gapless semiconductor: nickel chloride monolayer
Original language description
A great obstacle for practical applications of the quantum anomalous Hall (QAH) effect is the lack of suitable QAH materials (Chern insulators) with a large non-trivial band gap, room-temperature magnetic order and high carrier mobility. Based on first-principles calculations it is shown here that a nickel chloride (NiCl3) monolayer has all these characteristics. Thus, the NiCl3 monolayer represents a new class of Dirac materials with Dirac spin-gapless semiconducting properties and high-temperature ferromagnetism (similar to 400 K). Taking into account the spin-orbit coupling, the NiCl3 monolayer becomes an intrinsic Chern insulator with a large non-trivial band gap of similar to 24 meV, corresponding to an operating temperature as high as similar to 280 K at which the quantum anomalous Hall effect could be observed. The calculated large non-trivial gap, high Curie temperature and single-spin Dirac states reported herein for the NiCl3 monolayer led us to propose that this material gives a great promise for potential realization of a near-room temperature QAH effect and potential applications in spintronics. Last but not least the calculated Fermi velocities of Dirac fermions of about 4 x 10(5) m s(-1) indicate very high mobility in NiCl3 monolayers.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry

Project
<a href="/en/project/GBP106%2F12%2FG015" target="_blank" >GBP106/12/G015: Intelligent design of nanoporous adsorbents and catalysts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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