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000604542 0247_ $$2arXiv$$aarXiv:2303.04513
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000604542 088__ $$2arXiv$$aarXiv:2303.04513
000604542 1001_ $$aHoeing, Dominik$$b0
000604542 245__ $$aTime-Resolved Single-Particle X-ray Scattering Reveals Electron-Density Gradients As Coherent Plasmonic-Nanoparticle-Oscillation Source
000604542 260__ $$c2023
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000604542 500__ $$a32 pages, 5 figures, 1 supporting information document includedbitte mit dem JA https://bib-pubdb1.desy.de/record/481433 verknüpfen.
000604542 520__ $$aDynamics of optically-excited plasmonic nanoparticles are presently understood as a series of sequential scattering events, involving thermalization processes after pulsed optical excitation. One important step is the initiation of nanoparticle breathing oscillations. According to established experiments and models, these are caused by the statistical heat transfer from thermalized electrons to the lattice. An additional contribution by hot electron pressure has to be included to account for phase mismatches that arise from the lack of experimental data on the breathing onset. We used optical transient-absorption spectroscopy and time-resolved single-particle x-ray-diffractive imaging to access the excited electron system and lattice. The time-resolved single-particle imaging data provided structural information directly on the onset of the breathing oscillation and confirmed the need for an additional excitation mechanism to thermal expansion, while the observed phase-dependence of the combined structural and optical data contrasted previous studies. Therefore, we developed a new model that reproduces all our experimental observations without using fit parameters. We identified optically-induced electron density gradients as the main driving source.
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000604542 536__ $$0G:(EU-Grant)614507$$aCOMOTION - Controlling the Motion of Complex Molecules and Particles (614507)$$c614507$$fERC-2013-CoG$$x2
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000604542 536__ $$0G:(GEPRIS)194651731$$aDFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731)$$c194651731$$x4
000604542 536__ $$0G:(GEPRIS)432266622$$aDFG project 432266622 - Plasmonkontrolle mit THz Pulsen (432266622)$$c432266622$$x5
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000604542 7001_ $$0P:(DE-HGF)0$$aSalzwedel, Robert$$b1
000604542 7001_ $$0P:(DE-H253)PIP1025342$$aWorbs, Lena$$b2
000604542 7001_ $$0P:(DE-H253)PIP1092288$$aZhuang, Yulong$$b3
000604542 7001_ $$0P:(DE-H253)PIP1032102$$aSamanta, Amit K.$$b4
000604542 7001_ $$0P:(DE-H253)PIP1083098$$aLübke, Jannik$$b5
000604542 7001_ $$0P:(DE-H253)PIP1081267$$aEstillore, Armando D.$$b6
000604542 7001_ $$0P:(DE-H253)PIP1003276$$aDlugolecki, Karol$$b7
000604542 7001_ $$0P:(DE-H253)PIP1013418$$aPassow, Christopher$$b8
000604542 7001_ $$0P:(DE-H253)PIP1011809$$aErk, Benjamin$$b9
000604542 7001_ $$0P:(DE-H253)PIP1020649$$aEkanayake, Nagitha$$b10
000604542 7001_ $$0P:(DE-H253)PIP1019336$$aRamm, Daniel$$b11
000604542 7001_ $$0P:(DE-H253)PIP1021712$$aCorrea, Jonathan$$b12
000604542 7001_ $$0P:(DE-H253)PIP1084532$$aPapadopoulou, Christina C.$$b13
000604542 7001_ $$0P:(DE-HGF)0$$aNoor, Atia Tul$$b14
000604542 7001_ $$aSchulz, Florian$$b15
000604542 7001_ $$0P:(DE-HGF)0$$aSelig, Malte$$b16
000604542 7001_ $$0P:(DE-HGF)0$$aKnorr, Andreas$$b17$$eCorresponding author
000604542 7001_ $$0P:(DE-H253)PIP1023449$$aAyyer, Kartik$$b18$$eCorresponding author
000604542 7001_ $$0P:(DE-H253)PIP1012175$$aKüpper, Jochen$$b19$$eCorresponding author
000604542 7001_ $$0P:(DE-HGF)0$$aLange, Holger$$b20$$eCorresponding author
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