Article Details

Ultrafast Formation of a Fermi-Dirac Distributed Electron Gas

Oleh   G. Rohde [-]
Kontributor / Dosen Pembimbing : A. Stange, A. Müller, M. Behrendt, L.-P. Oloff, K. Hanff, T. J. Albert, P. Hein, K. Rossnagel, and M. Bauer
Jenis Koleksi : Jurnal elektronik
Penerbit : Lain-lain
Fakultas :
Subjek :
Kata Kunci : -
Sumber : PHYSICAL REVIEW LETTERS 121, 256401 (2018)
Staf Input/Edit : Ratnasari  
File : 1 file
Tanggal Input : 2018-12-20 10:25:12

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Time- and angle-resolved photoelectron spectroscopy with 13 fs temporal resolution is used to follow the different stages in the formation of a Fermi-Dirac distributed electron gas in graphite after absorption of an intense 7 fs laser pulse. Within the first 50 fs after excitation, a sequence of time frames is resolved that are characterized by different energy and momentum exchange processes among the involved photonic, electronic, and phononic degrees of freedom. The results reveal experimentally the complexity of the transition from a nascent nonthermal towards a thermal electron distribution due to the different timescales associated with the involved interaction processes.