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Zeeman splitting via spin-valley-layer coupling in bilayer MoTe2

Overview of attention for article published in Nature Communications, October 2017
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Title
Zeeman splitting via spin-valley-layer coupling in bilayer MoTe2
Published in
Nature Communications, October 2017
DOI 10.1038/s41467-017-00927-4
Pubmed ID
Authors

Chongyun Jiang, Fucai Liu, Jorge Cuadra, Zumeng Huang, Ke Li, Abdullah Rasmita, Ajit Srivastava, Zheng Liu, Wei-Bo Gao

Abstract

Atomically thin monolayer transition metal dichalcogenides possess coupling of spin and valley degrees of freedom. The chirality is locked to identical valleys as a consequence of spin-orbit coupling and inversion symmetry breaking, leading to a valley analog of the Zeeman effect in presence of an out-of-plane magnetic field. Owing to the inversion symmetry in bilayers, the photoluminescence helicity should no longer be locked to the valleys. Here we show that the Zeeman splitting, however, persists in 2H-MoTe2 bilayers, as a result of an additional degree of freedom, namely the layer pseudospin, and spin-valley-layer locking. Unlike monolayers, the Zeeman splitting in bilayers occurs without lifting valley degeneracy. The degree of circularly polarized photoluminescence is tuned with magnetic field from -37% to 37%. Our results demonstrate the control of degree of freedom in bilayer with magnetic field, which makes bilayer a promising platform for spin-valley quantum gates based on magnetoelectric effects.Monolayer transition metal dichalcogenides host a valley splitting in magnetic field analogous to the Zeeman effect. Here, the authors report that the Zeeman splitting still persists in bilayers of MoTe2 without lifting the valley degeneracy, due to spin-valley-layer coupling.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 83 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 83 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 32 39%
Researcher 13 16%
Student > Doctoral Student 6 7%
Other 5 6%
Professor > Associate Professor 4 5%
Other 6 7%
Unknown 17 20%
Readers by discipline Count As %
Physics and Astronomy 38 46%
Materials Science 12 14%
Chemistry 6 7%
Chemical Engineering 3 4%
Engineering 3 4%
Other 2 2%
Unknown 19 23%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. 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 08 October 2017.
All research outputs
#15,402,762
of 24,522,750 outputs
Outputs from Nature Communications
#45,343
of 52,820 outputs
Outputs of similar age
#183,443
of 327,954 outputs
Outputs of similar age from Nature Communications
#1,103
of 1,272 outputs
Altmetric has tracked 24,522,750 research outputs across all sources so far. This one is in the 36th percentile – i.e., 36% of other outputs scored the same or lower than it.
So far Altmetric has tracked 52,820 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 56.1. This one is in the 13th percentile – i.e., 13% of its peers scored the same or lower than it.
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 327,954 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 43rd percentile – i.e., 43% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 1,272 others from the same source and published within six weeks on either side of this one. This one is in the 13th percentile – i.e., 13% of its contemporaries scored the same or lower than it.