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Attosecond coherent electron motion in Auger-Meitner decay.
- Source :
-
Science (New York, N.Y.) [Science] 2022 Jan 21; Vol. 375 (6578), pp. 285-290. Date of Electronic Publication: 2022 Jan 06. - Publication Year :
- 2022
-
Abstract
- In quantum systems, coherent superpositions of electronic states evolve on ultrafast time scales (few femtoseconds to attoseconds; 1 attosecond = 0.001 femtoseconds = 10 <superscript>-18</superscript> seconds), leading to a time-dependent charge density. Here we performed time-resolved measurements using attosecond soft x-ray pulses produced by a free-electron laser, to track the evolution of a coherent core-hole excitation in nitric oxide. Using an additional circularly polarized infrared laser pulse, we created a clock to time-resolve the electron dynamics and demonstrated control of the coherent electron motion by tuning the photon energy of the x-ray pulse. Core-excited states offer a fundamental test bed for studying coherent electron dynamics in highly excited and strongly correlated matter.
Details
- Language :
- English
- ISSN :
- 1095-9203
- Volume :
- 375
- Issue :
- 6578
- Database :
- MEDLINE
- Journal :
- Science (New York, N.Y.)
- Publication Type :
- Academic Journal
- Accession number :
- 34990213
- Full Text :
- https://doi.org/10.1126/science.abj2096