Designing Flexible Quantum Spin Hall Insulators through 2D Ordered Hybrid Transition-Metal Carbides
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F19%3A10242872" target="_blank" >RIV/61989100:27740/19:10242872 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.jpcc.9b05962#" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.jpcc.9b05962#</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.9b05962" target="_blank" >10.1021/acs.jpcc.9b05962</a>
Alternative languages
Result language
angličtina
Original language name
Designing Flexible Quantum Spin Hall Insulators through 2D Ordered Hybrid Transition-Metal Carbides
Original language description
Quantum spin Hall (QSH) insulators have attracted much attention due to their potential applications ranging from electronic devices to quantum computing. In general, a large band gap is regarded as a critical descriptor in the design of QSH insulators; however, it faces challenges when additional factors such as strain and surface oxidation are involved in practical applications. In this work, taking M '' M-2'C2O2 (M' = Ti, Zr, Hf; M '' = Mo, W) as a representative, results reveal that 2D ordered transition-metal carbides (MXenes) are promising candidates for flexible spintronic devices, which is ascribed to the mechanical flexibility and robust QSH states under strain. Although a large bulk band gap is shown in M '' 2HfC2O2, a strain-induced topological phase transition may limit its flexible application. On the contrary, M '' 2TiC2O2 has a smaller,gap, and its topological nontrivial state survives under strain. When n changes from 0 to 4 in M '' 2TinCn+1O2, a topologically nontrivial-trivial phase transition is observed in W2HfnCn+1O2, whereas a topologically nontrivial state remains in Mo2TinCn+1O2. After further screening a variety of promising coatings, it is found that fluorographene may effectively preserve the topologically nontrivial nature of M '' M-2'C2O2 with surface oxidation resistance, even under strain, providing a feasible application of M '' M-2'C2O2 as flexible QSH insulators.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry C
ISSN
1932-7447
e-ISSN
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Volume of the periodical
123
Issue of the periodical within the volume
33
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
20664-20674
UT code for WoS article
000482545700064
EID of the result in the Scopus database
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