Ultrafast X-Ray Scattering in Solids

Reis, David A.; Lindenberg, Aaron M.

doi:10.1007/978-3-540-34436-0_6

Cited by 26 publications

(20 citation statements)

References 176 publications

(241 reference statements)

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“…Transient PTO (003) rocking curves resulting from the stress described by Eq. 1 are calculated using dynamical diffraction theory [48] and used to construct a predicted time scan like that of Fig. 1.…”

Section: (3)mentioning

confidence: 99%

Ultrafast Photovoltaic Response in Ferroelectric Nanolayers

Daranciang¹,

Highland²,

Wen³

et al. 2012

Phys. Rev. Lett.

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176

127

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confidence: 99%

Ultrafast Photovoltaic Response in Ferroelectric Nanolayers

Daranciang¹,

Highland²,

Wen³

et al. 2012

Phys. Rev. Lett.

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176

127

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“…Eq. 4 has been noted previously, but has not been implemented for molecular movies [16][17][18][19]. The initial reference distribution is extracted from negative delay data, when the probe sees the initial distribution.…”

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confidence: 99%

Self-Referenced Coherent Diffraction X-Ray Movie of Ångstrom- and Femtosecond-Scale Atomic Motion

et al. 2016

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Time-resolved femtosecond x-ray diffraction patterns from laser-excited molecular iodine are used to create a movie of intramolecular motion with a temporal and spatial resolution of 30 fs and 0.3 A. This high fidelity is due to interference between the non-stationary excitation and the stationary initial charge distribution. The initial state is used as the local oscillator for heterodyne amplification of the excited charge distribution to retrieve real-space movies of atomic motion onÅngstrom and femtosecond scales. This x-ray interference has not been employed to image internal motion in molecules before. Coherent vibrational motion and dispersion, dissociation, and rotational dephasing are all clearly visible in the data, thereby demonstrating the stunning sensitivity of heterodyne methods.High brightness ultrafast hard x-ray free electron lasers (FELs) can perform time-resolved x-ray diffractive imaging. Recent demonstrations of time-resolved crystal diffraction or time-resolved non-periodic imaging illustrate the power of these sources to trackÅngstrom-scale motion [1,2]. These have spurred new insights in broad areas of science, but have not fully realized the potential of x-ray FELs to image molecules with simultaneous sub-Ångstrom and few-femtosecond resolution. Previous x-ray or electron scattering experiments have used correlations between simulations and data to extract femtosecond molecular dynamics information [3][4][5][6][7].Here we propose and demonstrate an imaging method that employs a universal but unappreciated feature of time-resolved hard x-ray scattering that dramatically improves reconstructed images of charge motion, and enables femtosecond and sub-Ångstrom x-ray movies. The method relies on the "pump-probe" protocol, where motion is initiated by a short "start" pulse, and then interrogated at a later time by a "probe" pulse. The pumped fraction is small, and the unexcited fraction is our heterodyne reference [8].

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“…Femtosecond x-ray and electron scattering can provide a direct means for measuring the atomic-scale displacements associated with the propagating strain [13,14]. Nonetheless, experiments in metals have been limited primarily to observing the evolution of lattice temperature through the Debye-Waller factor [15] and the average lattice expansion through changes in the Bragg condition [14].…”

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confidence: 99%