تقرير
Extreme timescale core-level spectroscopy with tailored XUV pulses
| العنوان: | Extreme timescale core-level spectroscopy with tailored XUV pulses |
|---|---|
| المؤلفون: | Singla, R., Haynes, D. C., Hanff, K., Grguras, I., Schulz, S., Liu, H. Y., Simoncig, A., Tellkamp, F., Bajt, S., Rossnagel, K., Cavalieri, A. L. |
| سنة النشر: | 2018 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Optics |
| الوصف: | 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. Comment: 20 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1805.01723 |
| رقم الأكسشن: | edsarx.1805.01723 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |