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| Title |
Chiral Spin Mode on the Surface of a Topological Insulator
|
|---|---|
| Published in |
Physical Review Letters, September 2017
|
| DOI | 10.1103/physrevlett.119.136802 |
| Pubmed ID | |
| Authors |
H-H Kung, S Maiti, X Wang, S-W Cheong, D L Maslov, G Blumberg |
| Abstract |
Using polarization-resolved resonant Raman spectroscopy, we explore collective spin excitations of the chiral surface states in a three dimensional topological insulator, Bi_{2}Se_{3}. We observe a sharp peak at 150 meV in the pseudovector A_{2} symmetry channel of the Raman spectra. By comparing the data with calculations, we identify this peak as the transverse collective spin mode of surface Dirac fermions. This mode, unlike a Dirac plasmon or a surface plasmon in the charge sector of excitations, is analogous to a spin wave in a partially polarized Fermi liquid, with spin-orbit coupling playing the role of an effective magnetic field. |
X Demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 2 | 67% |
| Unknown | 1 | 33% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 3 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 61 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 61 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 18 | 30% |
| Researcher | 8 | 13% |
| Professor | 6 | 10% |
| Professor > Associate Professor | 6 | 10% |
| Student > Doctoral Student | 5 | 8% |
| Other | 8 | 13% |
| Unknown | 10 | 16% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 45 | 74% |
| Engineering | 2 | 3% |
| Materials Science | 2 | 3% |
| Social Sciences | 1 | 2% |
| Chemistry | 1 | 2% |
| Other | 0 | 0% |
| Unknown | 10 | 16% |
Attention Score in Context
This research output has an Altmetric Attention Score of 112. 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 14 March 2018.
All research outputs
#316,648
of 22,981,247 outputs
Outputs from Physical Review Letters
#699
of 35,813 outputs
Outputs of similar age
#7,500
of 320,662 outputs
Outputs of similar age from Physical Review Letters
#18
of 580 outputs
Altmetric has tracked 22,981,247 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 98th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 35,813 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 13.9. This one has done particularly well, scoring higher than 98% 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 320,662 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 97% of its contemporaries.
We're also able to compare this research output to 580 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 96% of its contemporaries.