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Spin-orbit-induced gap modification in buckled honeycomb XBi and XBi3 (X  =  B, Al, Ga, and In) sheets

Overview of attention for article published in Journal of Physics: Condensed Matter, November 2015
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Title
Spin-orbit-induced gap modification in buckled honeycomb XBi and XBi3 (X  =  B, Al, Ga, and In) sheets
Published in
Journal of Physics: Condensed Matter, November 2015
DOI 10.1088/0953-8984/27/48/485306
Pubmed ID
Authors

R R Q Freitas, F de Brito Mota, R Rivelino, C M C de Castilho, A Kakanakova-Georgieva, G K Gueorguiev

Abstract

The band structure and stability of XBi and XBi3 (X  =  B, Al, Ga, and In) single sheets are predicted using first-principles calculations. It is demonstrated that the band gap values of these new classes of two-dimensional (2D) materials depend on both the spin-orbit coupling (SOC) and type of group-III elements in these hetero-sheets. Thus, topological properties can be achieved, allowing for viable applications based on coherent spin transport at room temperature. The spin-orbit effects are proved to be essential to explain the tunability by group-III atoms. A clear effect of including SOC in the calculations is lifting the spin degeneracy of the bands at the Γ point of the Brillouin zone. The nature of the band gaps, direct or indirect, is also tuned by SOC, and by the appropriate X element involved. It is observed that, in the case of XBi single sheets, band inversions naturally occur for GaBi and InBi, which exhibit band gap values around 172 meV. This indicates that these 2D materials are potential candidates for topological insulators. On the contrary, a similar type of band inversion, as obtained for the XBi, was not observed in the XBi3 band structure. In general, the calculations, taking into account SOC, reveal that some of these buckled sheets exhibit sizable gaps, making them suitable for applications in room-temperature spintronic devices.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 16 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 16 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 4 25%
Student > Master 3 19%
Professor 2 13%
Professor > Associate Professor 2 13%
Researcher 2 13%
Other 1 6%
Unknown 2 13%
Readers by discipline Count As %
Physics and Astronomy 6 38%
Materials Science 3 19%
Chemistry 3 19%
Unknown 4 25%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 November 2015.
All research outputs
#17,285,036
of 25,373,627 outputs
Outputs from Journal of Physics: Condensed Matter
#2,414
of 6,154 outputs
Outputs of similar age
#163,932
of 274,641 outputs
Outputs of similar age from Journal of Physics: Condensed Matter
#9
of 76 outputs
Altmetric has tracked 25,373,627 research outputs across all sources so far. This one is in the 21st percentile – i.e., 21% of other outputs scored the same or lower than it.
So far Altmetric has tracked 6,154 research outputs from this source. They receive a mean Attention Score of 2.0. This one has gotten more attention than average, scoring higher than 54% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 274,641 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 31st percentile – i.e., 31% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 76 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 80% of its contemporaries.