Pre-determining the location of electromigrated gaps by nonlinear optical imaging

Mennemanteuil, Marie-Maxime; Dellinger, Jean; Buret, M.; Francs, Gérard Colas des; Bouhélier, Alexandre

doi:10.1063/1.4890415

Cited by 4 publications

(2 citation statements)

References 42 publications

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“…In noble metal systems the damping due to the d-electrons is weak for such a low-energy plasmon mode [58,59], and thus, we expect similar quantized evolution to be observable also in these materials. As our findings are based on the formation of a thin nanocontact, they are most likely to be experimentally reproducible in a contact breaking situation [51,60] of nanoparticle dimers rather than in a jump to contact one [9,10,16,17,48].…”

Section: Figmentioning

confidence: 99%

Quantized Evolution of the Plasmonic Response in a Stretched Nanorod

et al. 2015

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Quantum aspects, such as electron tunneling between closely separated metallic nanoparticles, are crucial for understanding the plasmonic response of nanoscale systems. We explore quantum effects on the response of the conductively coupled metallic nanoparticle dimer. This is realized by stretching a nanorod, which leads to the formation of a narrowing atomic contact between the two nanorod ends. Based on first-principles time-dependent density-functional-theory calculations, we find a discontinuous evolution of the plasmonic response as the nanorod is stretched. This is especially pronounced for the intensity of the main charge-transfer plasmon mode. We show the correlation between the observed discontinuities and the discrete nature of the conduction channels supported by the formed atomic-sized junction.

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Section: Figmentioning

confidence: 99%

Quantized Evolution of the Plasmonic Response in a Stretched Nanorod

et al. 2015

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“…Like the N-PL response, the SHG emitted from the nanowire end is produced by the plasmon propagating at the pump wavelength . Because SHG is sensitive to minute changes of the nanowire surface, , we utilize SHG as a probe to monitor the structural integrity of the termination. At the beginning of the stress sequence, there is no measurable I g crossing the 50 nm-wide gap.…”

Section: Results and Discussionmentioning

confidence: 99%

Memristive Control of Plasmon-Mediated Nonlinear Photoluminescence in Au Nanowires

Sharma,

Agreda,

Dell’Ova

et al. 2024

ACS Nano

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Nonlinear photoluminescence (N-PL) is a broadband photon emission arising from a nonequilibrium heated electron distribution generated at the surface of metallic nanostructures by ultrafast pulsed laser illumination. N-PL is sensitive to surface morphology, local electromagnetic field strength, and electronic band structure, making it relevant to probe optically excited nanoscale plasmonic systems. It also has been key to accessing the complex multiscale time dynamics ruling electron thermalization. Here, we show that plasmon-mediated N-PL emitted by a gold nanowire can be modified by an electrical architecture featuring a nanogap. Upon voltage activation, we observe that N-PL becomes dependent on the electrical transport dynamics and can thus be locally modulated. This finding brings an electrical leverage to externally control the photoluminescence generated from metal nanostructures and constitutes an asset for the development of emerging nanoscale interface devices managing photons and electrons.

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Electromigrated nanogaps: A review on the fabrications and applications

Kim¹,

Ang²,

Ang³

et al. 2021

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Electromigration—a critical failure mode of metal interconnects in integrated circuits—has been exploited for constructing nanometer-sized gaps (or nanogaps, less than a few nanometers) on metallic nanowires. Electromigrated nanogaps have been utilized extensively in the field of nanotechnology and have demonstrated to be an effective platform for electrically accessing small things such as molecules in a device fashion, establishing metal-molecule-metal junctions. These devices allow the study of the electronic transport phenomena through molecules and DNA. Furthermore, electromigrated nanogaps can read out incident electromagnetic fields as an antenna due to the plasmonic excitation on the surface, which is usually maximized in nanogaps. Moreover, structural changes caused by electromigration on metallic nanowires have been leveraged to create single-component resistive switching memories. In this review, we discuss the recent progress and challenges of electromigration methods for a nanogap creation as well as their applications for electronic devices (molecular/DNA devices and resistive switches), thermoelectric energy conversion devices, and photonic devices (nanoantennas).

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Pre-determining the location of electromigrated gaps by nonlinear optical imaging

Cited by 4 publications

References 42 publications

Quantized Evolution of the Plasmonic Response in a Stretched Nanorod

Quantized Evolution of the Plasmonic Response in a Stretched Nanorod

Memristive Control of Plasmon-Mediated Nonlinear Photoluminescence in Au Nanowires

Electromigrated nanogaps: A review on the fabrications and applications

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