Giant electron–phonon coupling detected under surface plasmon resonance in Au film

He, Feng; Sheehan, Nathanial; Bank, Seth R.; Wang, Yaguo

doi:10.1364/ol.44.004590

Cited by 5 publications

(2 citation statements)

References 26 publications

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“…For example, studies have investigated how the detection sensitivity of the optical response can be enhanced by surface plasmon polaritons [6] , [7] , [8] , the influence of the size and shape effects of plasmonic nanoparticles [9] , [10] , [11] , and the use of plasmonic nanodisks and arrays [12] , [13] , [14] , [15] . Studies have also demonstrated that through direct combination with picosecond laser ultrasonic sonar, surface plasmons based on noble metal nanofilms are a promising tool for detecting picosecond ultrasonic pulses [16] , [17] , [18] , [19] , [20] , [21] , [22] .…”

Section: Introductionmentioning

confidence: 99%

Effect of surface plasmon on optical detection of picosecond ultrasonic pulses generated in aluminum nanofilms

Lee

Sun

2023

Photoacoustics

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Section: Introductionmentioning

confidence: 99%

Effect of surface plasmon on optical detection of picosecond ultrasonic pulses generated in aluminum nanofilms

Lee

Sun

2023

Photoacoustics

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“…Depending on the geometry of metal nanostructures, the materials' band structure, and the incident photons' energy 31 , the relaxation time can vary from a few hundred femtoseconds up to a couple of picoseconds. In the case of gold and aluminum nanostructures, relaxation times on the order of hundreds of picoseconds, due to the acoustic vibrations of the lattice, have been reported [32][33][34] . The effect of enhanced absorption on hot carrier relaxation time has been extensively studied in the case of te thin film and nano-structured plasmonic systems [35][36][37] ; however, the importance of the strongly confined field inside the metal thin film induced by surface plasmon coupling on hot-carrier lifetimes is still elusive.…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon assisted control of hot-electron relaxation time

Memarzadeh

Kim

Aytac

et al. 2020

Optica

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Surface plasmon mediated hot carrier generation is widely utilized for the manipulation of the electron-photon interactions in many types of optoelectronic devices including solar cells, photodiodes, and optical modulators. A diversity of plasmonic systems such as nanoparticles, resonators, and waveguides have been introduced to enhance hot carrier generation; however, the impact of the propagating surface plasmons on hot carrier lifetime has not been clearly demonstrated. Here, we systematically study the hot carrier relaxation in thin film gold (Au) samples under surface plasmon coupling with the Kretschmann configuration. We observe that the locally confined electric field at the surface of the metal significantly affects the hot carrier distribution and electron temperature, which results in a slowing of the hot electrons relaxation time, regardless of the average value of the absorbed power in the Au thin film. This result could be extended to other plasmonic nanostructures, enabling the control of hot carrier lifetimes throughout the optical frequency range.

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Giant Enhancement of Electron–Phonon Coupling in Dimensionality‐Controlled SrRuO₃ Heterostructures

et al. 2023

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Electrons in crystals interact closely with quantized lattice degree of freedom, determining fundamental electrodynamic behaviors and versatile correlated functionalities. However, the strength of the electron–phonon interaction is so far determined as an intrinsic value of a given material, restricting the development of potential electronic and phononic applications employing the tunable coupling strength. Here, it is demonstrated that the electron–phonon coupling in SrRuO3 can be largely controlled by multiple intuitive tuning knobs available in synthetic crystals. The coupling strength of quasi‐2D SrRuO3 is enhanced by ≈300‐fold compared with that of bulk SrRuO3. This enormous enhancement is attributed to the non‐local nature of the electron–phonon coupling within the well‐defined synthetic atomic network, which becomes dominant in the limit of the 2D electronic state. These results provide valuable opportunities for engineering the electron–phonon coupling, leading to a deeper understanding of the strongly coupled charge and lattice dynamics in quantum materials.

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Giant electron–phonon coupling detected under surface plasmon resonance in Au film

Cited by 5 publications

References 26 publications

Effect of surface plasmon on optical detection of picosecond ultrasonic pulses generated in aluminum nanofilms

Effect of surface plasmon on optical detection of picosecond ultrasonic pulses generated in aluminum nanofilms

Surface plasmon assisted control of hot-electron relaxation time

Giant Enhancement of Electron–Phonon Coupling in Dimensionality‐Controlled SrRuO₃ Heterostructures

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Giant electron–phonon coupling detected under surface plasmon resonance in Au film

Cited by 5 publications

References 26 publications

Effect of surface plasmon on optical detection of picosecond ultrasonic pulses generated in aluminum nanofilms

Effect of surface plasmon on optical detection of picosecond ultrasonic pulses generated in aluminum nanofilms

Surface plasmon assisted control of hot-electron relaxation time

Giant Enhancement of Electron–Phonon Coupling in Dimensionality‐Controlled SrRuO3 Heterostructures

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Product

Resources

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Giant Enhancement of Electron–Phonon Coupling in Dimensionality‐Controlled SrRuO₃ Heterostructures