dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Pervishko, Anastasiia A. |
dc.contributor.author |
Yudin, Dmitry |
dc.contributor.author |
Shelykh, Ivan |
dc.date.accessioned |
2019-03-15T10:55:38Z |
dc.date.available |
2019-03-15T10:55:38Z |
dc.date.issued |
2018-02-16 |
dc.identifier.citation |
Pervishko, A. A., Yudin, D., & Shelykh, I. A. (2018). Impact of high-frequency pumping on anomalous finite-size effects in three-dimensional topological insulators. Physical Review B, 97(7), 075420. doi:10.1103/PhysRevB.97.075420 |
dc.identifier.issn |
2469-9950 |
dc.identifier.issn |
2469-9969 (eISSN) |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/1054 |
dc.description |
Publisher's version (útgefin grein) |
dc.description.abstract |
Lowering of the thickness of a thin-film three-dimensional topological insulator down to a few nanometers results in the gap opening in the spectrum of topologically protected two-dimensional surface states. This phenomenon, which is referred to as the anomalous finite-size effect, originates from hybridization between the states propagating along the opposite boundaries. In this work, we consider a bismuth-based topological insulator and show how the coupling to an intense high-frequency linearly polarized pumping can further be used to manipulate the value of a gap. We address this effect within recently proposed Brillouin-Wigner perturbation theory that allows us to map a time-dependent problem into a stationary one. Our analysis reveals that both the gap and the components of the group velocity of the surface states can be tuned in a controllable fashion by adjusting the intensity of the driving field within an experimentally accessible range and demonstrate the effect of light-induced band inversion in the spectrum of the surface states for high enough values of the pump. |
dc.description.sponsorship |
The support from Megagrant No. 14.Y26.31.0015 and
Project No. 3.8884.2017/8.9 of the Ministry of Education and
Science of the Russian Federation is gratefully acknowledged.
D.Y. acknowledges the support from RFBR Project No. 16-
32-60040. I.A.S. acknowledges support from Project No.
3.2614.2017/4.6 of the Ministry of Education and Science
of Russian Federation, Rannis Project No. 163082-051, and
Horizon2020 RISE project CoExAN. |
dc.format.extent |
075420 |
dc.language.iso |
en |
dc.publisher |
American Physical Society (APS) |
dc.relation |
info:eu-repo/grantAgreement/EC/H2020/CoExAN |
dc.relation.ispartofseries |
Physical Review B;97(7) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Band gap |
dc.subject |
Light-matter interaction |
dc.subject |
Spin-orbit coupling |
dc.subject |
Topological insulators |
dc.subject |
Condensed Matter & Materials Physics |
dc.subject |
Grannfræði |
dc.subject |
Þéttefnisfræði |
dc.title |
Impact of high-frequency pumping on anomalous finite-size effects in three-dimensional topological insulators |
dc.type |
info:eu-repo/semantics/article |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Physical Review B |
dc.identifier.doi |
10.1103/PhysRevB.97.075420 |
dc.contributor.department |
Raunvísindastofnun (HÍ) |
dc.contributor.department |
Science Institute (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |