Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intrinsic Luminescence Blinking from Plasmonic Nanojunctions   Plasmonic nanojunctions, consisting of adjacent metal structures with
nanometre gaps, can support localised plasmon resonances that boost light
matter interactions and concentrate electromagnetic fields at the nanoscale. In
this regime, the optical response of the system is governed by poorly
understood dynamical phenomena at the frontier between the bulk, molecular and
atomic scales. Here, we report ubiquitous spectral fluctuations in the
intrinsic light emission from photo-excited gold nanojunctions, which we
attribute to the light-induced formation of domain boundaries and
quantum-confined emitters inside the noble metal. Our data suggest that
photoexcited carriers and gold adatom - molecule interactions play key roles in
triggering luminescence blinking. Surprisingly, this internal restructuring of
the metal has no measurable impact on the Raman signal and scattering spectrum
of the plasmonic cavity. Our findings demonstrate that metal luminescence
offers a valuable proxy to investigate atomic fluctuations in plasmonic
cavities, complementary to other optical and electrical techniques.

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The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: funct-an
1
The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: eess
31
The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys