Numerical study of cross-polarized plasmons in doped carbon nanotubes

Uryu, Seiji

doi:10.1103/physrevb.97.125420

Cited by 8 publications

(2 citation statements)

References 93 publications

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“…Unlike ISBPs in quantum wells with oblique incident light excitation, ISBPs in 1D SWCNTs can be excited under normal incidence. Also, different from crosspolarized excitons, ISBPs are expected to be strong due to the concentrated joint density-of-states (see Figure 9(b)) as well as the suppression of the depolarization effect at high E F [85,86].…”

Section: Absorption Of Perpendicularly Polarized Lightmentioning

confidence: 99%

Science and applications of wafer-scale crystalline carbon nanotube films prepared through controlled vacuum filtration

Gao

Kono

2019

R. Soc. open sci.

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Carbon nanotubes (CNTs) make an ideal one-dimensional (1D) material platform for the exploration of novel physical phenomena under extremely strong quantum confinement. The 1D character of electrons, phonons and excitons in individual CNTs features extraordinary electronic, thermal and optical properties. Since their discovery in 1991, they have been continuing to attract interest in various disciplines, including chemistry, materials science, physics and engineering. However, the macroscopic manifestation of 1D properties is still limited, despite significant efforts for decades. Recently, a controlled vacuum filtration method has been developed for the preparation of wafer-scale films of crystalline chirality-enriched CNTs, and such films have enabled exciting new fundamental studies and applications. In this review, we will first discuss the controlled vacuum filtration technique, and then summarize recent discoveries in optical spectroscopy studies and optoelectronic device applications using films prepared by this technique.

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Section: Absorption Of Perpendicularly Polarized Lightmentioning

confidence: 99%

Science and applications of wafer-scale crystalline carbon nanotube films prepared through controlled vacuum filtration

Gao

Kono

2019

R. Soc. open sci.

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“…From a theoretical point of view, if the spin degrees of freedom is replaced with pseudospin, such edge plasmon crystal without an external magnetic field is relevant to the plasmons observed in doped carbon nanotubes (albeit with a difference in spatial scales). [29][30][31][32] Though this appears to be an impossible geometry for EMPs, azimuthal plasmons in doped carbon nanotubes (CNTs) can be treated as a circular current in two dimensions, if the domain is regarded as the cross section of a CNT. This is an issue to which the results of this paper could be applied.…”

Section: Discussionmentioning

confidence: 99%

Band Structures of Edge Magnetoplasmon Crystals

Sasaki

2021

Preprint

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A two-dimensional electron gas in a static external magnetic field exhibits two distinct collective excitation modes. The lower frequency mode propagates along the periphery of the domain almost freely with an extended lifetime, which is referred to as edge magnetoplasmons. Peculiar phenomena caused by a capacitive interaction between nearest neighbor domains are known, such as the emergence of Tomonaga-Luttinger liquid and charge density fractionalization. Meanwhile, the number of coupled domains investigated in the past has been limited to a small number. Here, we performed calculations using a continuum model of edge magnetoplasmons, the band structures of planar crystals composed of an arbitrary number of domains, including a chain, ladder, and honeycomb network, with the general interaction strength. We explain the band structures in terms of the fundamental collective modes of a molecule composed of two equivalent domains. These are the extended chiral propagation modes that yield a linear dispersion band and the standing wave modes localized in the coupled regions that cause a flat band. The chain's band structures resemble the miniband structures calculated from the Kronig-Penny model for the electron in a semiconductor superlattice. We point out that a geometrical deformation of the chain does not change the band structures as it can be expressed as a gauge degree of freedom that only causes a shift in the wavenumber.

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Dynamical environmental effects lowering the plasmon energy and lifetime in doped carbon nanotubes

Sasaki

2020

Carbon

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Numerical study of cross-polarized plasmons in doped carbon nanotubes

Cited by 8 publications

References 93 publications

Science and applications of wafer-scale crystalline carbon nanotube films prepared through controlled vacuum filtration

Science and applications of wafer-scale crystalline carbon nanotube films prepared through controlled vacuum filtration

Band Structures of Edge Magnetoplasmon Crystals

Dynamical environmental effects lowering the plasmon energy and lifetime in doped carbon nanotubes

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