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1.
Time- and angle-resolved photoemission spectroscopy with optimized high-harmonic pulses using frequency-doubled Ti:Sapphire lasers
Steffen Eich, Jurij Urbančič, 2014, izvirni znanstveni članek

Opis: Time- and angle-resolved photoemission spectroscopy (trARPES) using femtosecond extreme ultraviolet high harmonics has recently emerged as a powerful tool for investigating ultrafast quasiparticle dynamics in correlated-electron materials. However, the full potential of this approach has not yet been achieved because, to date, high harmonics generated by 800 nm wavelength Ti:Sapphire lasers required a trade-off between photon flux, energy and time resolution. Photoemission spectroscopy requires a quasi-monochromatic output, but dispersive optical elements that select a single harmonic can significantly reduce the photon flux and time resolution. Here we show that 400 nm driven high harmonic extreme-ultraviolet trARPES is superior to using 800 nm laser drivers since it eliminates the need for any spectral selection, thereby increasing photon flux and energy resolution to <150 meV while preserving excellent time resolution of about 30 fs.
Najdeno v: ključnih besedah
Ključne besede: angle-resolved photoemission spectroscopy, ARPES, high harmonic generation, ultrafast surface science
Objavljeno: 20.04.2017; Ogledov: 3337; Prenosov: 0
.pdf Polno besedilo (1,80 MB)

2.
Topological properties and self-energy effects in elemental Yb
L. Petaccia, D. Ceresoli, S. Iacobucci, A. Ruocco, Giovanni Stefani, Luka Novinec, M. I. Trioni, Sandra Gardonio, F. Offi, P. M. Sheverdyaeva, 2021, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...electronic structure, topological materials, lanthanides, angle-resolved photoemission spectroscopy...
Ključne besede: electronic structure, topological materials, lanthanides, angle-resolved photoemission spectroscopy
Objavljeno: 03.12.2021; Ogledov: 171; Prenosov: 4
.pdf Polno besedilo (1,94 MB)
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