TY - JOUR
T1 - Role of matrix elements in the time-resolved photoemission signal
AU - Boschini, F.
AU - Bugini, D.
AU - Zonno, M.
AU - Michiardi, M.
AU - Day, R. P.
AU - Razzoli, E.
AU - Zwartsenberg, B.
AU - Schneider, M.
AU - Da, Silva Neto E. H.
AU - Dal, Conte S.
AU - Kushwaha, S. K.
AU - Cava, R. J.
AU - Zhdanovich, S.
AU - Mills, A. K.
AU - Levy, G.
AU - Carpene, E.
AU - Dallera, C.
AU - Giannetti, Claudio
AU - Jones, D. J.
AU - Cerullo, G.
AU - Damascelli, A.
PY - 2020
Y1 - 2020
N2 - Time- and angle-resolved photoemission spectroscopy (TR-ARPES) provides access to the ultrafast evolution of electrons and many-body interactions in solid-state systems. However, the momentum- and energy-resolved transient photoemission intensity may not be unambiguously described by the intrinsic relaxation dynamics of photoexcited electrons alone. The interpretation of the time-dependent photoemission signal can be affected by the transient evolution of the electronic distribution, and both the one-electron removal spectral function as well as the photoemission matrix elements. Here we investigate the topological insulator Bi1.1Sb0.9Te2S to demonstrate, by means of a detailed probe-polarization dependent study, the transient contribution of matrix elements to TR-ARPES.
AB - Time- and angle-resolved photoemission spectroscopy (TR-ARPES) provides access to the ultrafast evolution of electrons and many-body interactions in solid-state systems. However, the momentum- and energy-resolved transient photoemission intensity may not be unambiguously described by the intrinsic relaxation dynamics of photoexcited electrons alone. The interpretation of the time-dependent photoemission signal can be affected by the transient evolution of the electronic distribution, and both the one-electron removal spectral function as well as the photoemission matrix elements. Here we investigate the topological insulator Bi1.1Sb0.9Te2S to demonstrate, by means of a detailed probe-polarization dependent study, the transient contribution of matrix elements to TR-ARPES.
KW - matrix-elements
KW - time- and angle-resolved photoemission spectroscopy (TR-ARPES)
KW - topological insulators
KW - ultrafast electron dynamics
KW - matrix-elements
KW - time- and angle-resolved photoemission spectroscopy (TR-ARPES)
KW - topological insulators
KW - ultrafast electron dynamics
UR - https://publicatt.unicatt.it/handle/10807/163059
UR - https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85082241717&origin=inward
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85082241717&origin=inward
U2 - 10.1088/1367-2630/ab6eb1
DO - 10.1088/1367-2630/ab6eb1
M3 - Article
SN - 1367-2630
VL - 22
SP - N/A-N/A
JO - New Journal of Physics
JF - New Journal of Physics
IS - 2
ER -