Journal
NANOSCALE
Volume 12, Issue 44, Pages 22817-22825Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nr06523d
Keywords
-
Categories
Funding
- President's PhD Scholarship programme at Imperial College London
- EPSRC [EP/S018395/1]
- Royal Society University Research Fellowship by the UK Royal Society
- Centre for Doctoral Training on Theory and Simulation of Materials at Imperial College London - EPSRC [EP/L015579/1]
- University of Birmingham (Birmingham Fellowship)
- Spanish Ministerio de Economia y Competitividad [FIS2017-91413-EXP]
- Ministerio de Ciencia, Innovacion y Universidades through grant MELODIA [PGC2018-095777-B-C21]
- EPSRC [EP/M022250/1, EP/S018395/1] Funding Source: UKRI
Ask authors/readers for more resources
Topological insulator nanoparticles (TINPs) host topologically protected Dirac surface states, just like their bulk counterparts. For TINPs of radius <100 nm, quantum confinement on the surface results in the discretization of the Dirac cone. This system of discrete energy levels is referred to as a topological quantum dot (TQD) with energy level spacing on the order of Terahertz (THz), which is tunable with material-type and particle size. The presence of these discretized energy levels in turn leads to a new electron-mediated phonon-light coupling in the THz range, and the resulting mode can be observed in the absorption cross-section of the TINPs. We present the first experimental evidence of this new quantum phenomenon in Bi2Te3 topological quantum dots, remarkably observed at room temperature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available