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  Extreme timescale core-level spectroscopy with tailored XUV pulses

Singla, R., Haynes, D., Hanff, K., Grguras, I., Schulz, S., Liu, H. Y., et al. (2018). Extreme timescale core-level spectroscopy with tailored XUV pulses.

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1805.01723.pdf (Preprint), 3MB
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2018
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https://arxiv.org/abs/1805.01723 (Preprint)
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 Creators:
Singla, R.1, Author
Haynes, D.2, 3, Author              
Hanff, K.4, Author
Grguras, I.3, 5, Author
Schulz, S.3, 6, Author
Liu, H. Y.3, Author
Simoncig, A.3, Author
Tellkamp, F.7, Author
Bajt, S.6, Author
Rossnagel, K.4, Author
Cavalieri, A. L.3, Author
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_persistent22              
2International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              
3Extreme Timescales, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_persistent22              
4Institute of Experimental and Applied Physics, Kiel University, ou_persistent22              
5Class 5 Photonics GmbH, ou_persistent22              
6Deutsches Elektronen-Synchrotron DESY, ou_persistent22              
7Machine Physics, Scientific Service Units, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_persistent22              

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 Abstract: A new approach for few-femtosecond time-resolved photoelectron spectroscopy in condensed matter that balances the combined needs for both temporal and energy resolution is demonstrated. Here, the method is designed to investigate a prototypical Mott insulator, tantalum disulphide (1T-TaS2), which transforms from its charge-density-wave ordered Mott insulating state to a conducting state in a matter of femtoseconds. The signature to be observed through the phase transition is a charge-density-wave induced splitting of the Ta 4f core-levels, which can be resolved with sub-eV spectral resolution. Combining this spectral resolution with few-femtosecond time resolution enables the collapse of the charge ordered Mott state to be clocked. Precise knowledge of the sub-20-femtosecond dynamics will provide new insight into the physical mechanism behind the collapse and may reveal Mott physics on the timescale of electronic hopping.

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Language(s): eng - English
 Dates: 2018-05-042018-05-04
 Publication Status: Published online
 Pages: 20
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: arXiv: 1805.01723
 Degree: -

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