Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session J59: Electronic Structure: Thermodynamic and Optical Properties
3:00 PM–5:48 PM,
Tuesday, March 16, 2021
Sponsoring
Unit:
FIAP
Chair: Thuc Mai, National Institute of Standards and Technology
Abstract: J59.00004 : Analysis of critical points in temperature dependent and time resolved ellipsometry spectra of Ge using digital filtering
3:36 PM–3:48 PM
Live
Presenter:
Carola Emminger
(Department of Physics, New Mexico State University)
Authors:
Carola Emminger
(Department of Physics, New Mexico State University)
Farzin Abadizaman
(Department of Physics, New Mexico State University)
Nuwanjula Samarasingha Arachchige
(Department of Physics, New Mexico State University)
Jose Menendez
(Department of Physics, Arizona State University)
Shirly Espinoza
(ELI Beamlines, Institute of Physics of the Czech Academy of Sciences)
Steffen Richter
(Institutionen för fysik, Linköpings University)
Mateusz Rebarz
(ELI Beamlines, Institute of Physics of the Czech Academy of Sciences)
Oliver Herrfurth
(Felix Bloch Institute for Solid State Physics, Universität Leipzig)
Martin Zahradník
(ELI Beamlines, Institute of Physics of the Czech Academy of Sciences)
Rüdiger Schmidt-Grund
(Institut für Physik, Technische Universität Ilmenau)
Jakob Andreasson
(ELI Beamlines, Institute of Physics of the Czech Academy of Sciences)
Stefan Zollner
(Department of Physics, New Mexico State University)
The same analysis method is applied to the E1 and E1+Δ1 CPs of Ge dependent on photo-excited charge carrier density obtained from femtosecond pump-probe ellipsometry measurements.2 The CP parameters are determined as functions of delay time and a change of the CP energies suggests a laser heating of about 20 K to 40 K.
1V.L. Le, T.J. Kim, Y.D. Kim, D.E. Aspnes, J. Vac. Sci. & Technol. B 37, 052903 (2019)
2S. Espinoza, S. Richter, M. Rebarz, O. Herrfurth, R. Schmidt-Grund, J. Andreasson, S. Zollner, Appl. Phys. Lett. 115, 052105 (2019)
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