Attosecond intra-valence band dynamics and resonant-photoemission delays in W(110)

被引：13
|
作者：
Heinrich, S. [1 ,2 ]
Saule, T. [1 ,2 ,3 ]
Hoegner, M. [1 ,2 ]
Cui, Y. [1 ,2 ]
Yakovlev, V. S. [1 ,2 ]
Pupeza, I [1 ,2 ]
Kleineberg, U. [1 ,2 ]
机构：
[1] Max Planck Inst Quantenopt MPQ, D-85748 Garching, Germany
[2] Ludwig Maximilians Univ Munchen LMU, D-85748 Garching, Germany
[3] Univ Connecticut UConn, Dept Phys, Storrs, CT 06269 USA
来源：
NATURE COMMUNICATIONS | 2021年 / 12卷 / 01期
关键词：
TUNGSTEN; ENERGY; PHOTOIONIZATION; STREAKING; TIME;
D O I：
10.1038/s41467-021-23650-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Accessing intraband dynamics is challenging due to simultaneous requirements on energy, momentum and time resolution. Here, the authors measure intraband delays between sp- and d-band electronic states in the valence band photoemission from W(110) using intracavity generated attosecond pulse trains. Time-resolved photoelectron spectroscopy with attosecond precision provides new insights into the photoelectric effect and gives information about the timing of photoemission from different electronic states within the electronic band structure of solids. Electron transport, scattering phenomena and electron-electron correlation effects can be observed on attosecond time scales by timing photoemission from valence band states against that from core states. However, accessing intraband effects was so far particularly challenging due to the simultaneous requirements on energy, momentum and time resolution. Here we report on an experiment utilizing intracavity generated attosecond pulse trains to meet these demands at high flux and high photon energies to measure intraband delays between sp- and d-band states in the valence band photoemission from tungsten and investigate final-state effects in resonant photoemission.
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页数：10
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