Field Emission from Graphene Nanosheets

Matsumoto, Takahiro; Nakamura, Tomonori; Neo, Yoichiro; Mimura, Hidenori; Tomita, Makoto

doi:10.5772/22058

Cited by 1 publication

(1 citation statement)

References 43 publications

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“…standing up to lying down [23,[25][26][27][28] . However, none of these ideas has provided a consistent explanation [29,34] . In contrast, our simulation model consistently reproduced those emission patterns, as shown in the lower panels of Figures 2(a)-2(d).…”

Section: Full Textmentioning

confidence: 99%

Subnanometeric optical modulation of a single-molecule electron source

Yanagisawa

Bohn

Kitoh-Nishioka

et al. 2022

Preprint

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The irradiation of femtosecond light pulses onto nano-objects creates localised optical fields on the nanostructure surfaces. Plasmonic effects spatially modulate the local-field distribution, achieving optical control of an ultrafast electron source on a scale of approximately 10 nm. Further miniaturisation of such an electron source down to an atomistically small scale is technically difficult by modulating the local-field distribution via plasmonic effects. Here, by illuminating recently identified single-molecule electron sources with femtosecond light pulses, we discovered that largely modulated emission patterns appeared from single C60 molecules, approximately one nanometre in size. Our simulations revealed that the emission patterns represented the single-molecule molecular orbitals (MOs), and the observed modulations originated from the variations of the single-molecule MOs, practically achieving subnanometric optical modulation of an electron source. Our work has thus demonstrated a simple way to continue miniaturising the spatially-controlled electron source down to an atomistic scale using quantum effects.

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