Flat-band-enabled triplet excitonic insulator in a diatomic kagome lattice

G Sethi, Y Zhou, L Zhu, L Yang, F Liu - Physical Review Letters, 2021 - APS
The excitonic insulator (EI) state is a strongly correlated many-body ground state, arising
from an instability in the band structure toward exciton formation. We show that the flat …

Excited quantum anomalous and spin Hall effect: dissociation of flat-bands-enabled excitonic insulator state

Y Zhou, G Sethi, H Liu, Z Wang, F Liu - Nanotechnology, 2022 - iopscience.iop.org
Quantum anomalous Hall effect (QAHE) and quantum spin Hall effect (QSHE) are two
interesting physical manifestations of 2D materials that have an intrinsic nontrivial band …

Ionization and electron excitation of C60 in a carbon nanotube: A variable temperature/voltage transmission electron microscopic study

D Liu, S Kowashi, T Nakamuro… - Proceedings of the …, 2022 - National Acad Sciences
There is increasing attention to chemical applications of transmission electron microscopy,
which is often plagued by radiation damage. The damage in organic matter predominantly …

Interaction of luminescent defects in carbon nanotubes with covalently attached stable organic radicals

FJ Berger, JA de Sousa, S Zhao, NF Zorn… - ACS …, 2021 - ACS Publications
The functionalization of single-walled carbon nanotubes (SWCNTs) with luminescent sp3
defects has greatly improved their performance in applications such as quantum light …

Delayed fluorescence from carbon nanotubes through singlet oxygen-sensitized triplet excitons

CW Lin, SM Bachilo, RB Weisman - Journal of the American …, 2020 - ACS Publications
Single-wall carbon nanotubes (SWCNTs) in liquid suspension have been observed to emit
delayed, microsecond-scale fluorescence arising from upconverted triplet excitons that are …

Chirality dependence of triplet excitons in (6, 5) and (7, 5) single-wall carbon nanotubes revealed by optically detected magnetic resonance

I Sudakov, E Goovaerts, W Wenseleers, JL Blackburn… - ACS …, 2023 - ACS Publications
The excitonic structure of single-wall carbon nanotubes (SWCNTs) is chirality dependent
and consists of multiple singlet and triplet excitons (TEs) of which only one singlet exciton …

Non-negligible roles of charge transfer excitons in ultrafast excitation energy transfer dynamics of a double-walled carbon nanotube

RF Xie, JB Zhang, Y Wu, L Li, XY Liu… - The Journal of Chemical …, 2023 - pubs.aip.org
Herein, we employed a developed linear response time dependent density functional theory-
based nonadiabatic dynamics simulation method that explicitly takes into account the …

Formation of organic color centers in air-suspended carbon nanotubes using vapor-phase reaction

D Kozawa, X Wu, A Ishii, J Fortner, K Otsuka… - Nature …, 2022 - nature.com
Organic color centers in single-walled carbon nanotubes have demonstrated exceptional
ability to generate single photons at room temperature in the telecom range. Combining the …

Topological Defects in Semiconducting Carbon Nanotubes as Triplet Exciton Traps and Single-Photon Emitters

T Biktagirov, U Gerstmann, WG Schmidt - arXiv preprint arXiv:2408.11134, 2024 - arxiv.org
We investigate the role of topological defects in exciton behavior in (6, 5) semiconducting
single-walled carbon nanotubes using density functional theory. Our study identifies the …

Ionization and electron excitation of fullerene molecules in a carbon nanotube. A variable temperature/voltage transmission electron microscopic study

D Liu, S Kowashi, T Nakamuro, D Lungerich… - arXiv preprint arXiv …, 2021 - arxiv.org
There is increasing attention to chemical applications of transmission electron microscopy,
which is often plagued by radiation damage. The damage in organic matter predominantly …