6 papers
Detection of Image Potential States above the vacuum level in GeTe
Frédéric Chassot, Aki Pulkkinen, Ján Minár +3
The ferroelectric semiconductor α-GeTe(111) has attracted significant attention in the last decade due to its unique properties, with extensive studies focusing on its occupied el…
Suppression of stripe-ordered structural phases in monolayer IrTe by a gold substrate
Kati Asikainen, Frédéric Chassot, Baptiste Hildebrand +12
Metal-assisted exfoliation of two-dimensional (2D) materials has emerged as an efficient route to isolating large-area monolayer crystals, yet the influence of the supporting metal…
Ultrafast recovery dynamics of dimer stripes in IrTe2
M. Rumo, G. Kremer, M. Heber +10
The transition metal dichalcogenide IrTe2 displays a remarkable series of first-order phase transitions below room temperature, involving lattice displacements as large as 20 perce…
Conduction Band Structure and Ultrafast Dynamics of Ferroelectric -GeTe(111)
Geoffroy Kremer, Laurent Nicolaï, Frédéric Chassot +9
-GeTe(111) is a non-centrosymmetric ferroelectric (FE) material for which a significative lattice distortion combined with a strong spin-orbit interaction gives rise to giant R…
Revealing electronic correlations in YNiBC using photoemission spectroscopy
Aki Pulkkinen, Geoffroy Kremer, Vladimir N. Strocov +3
We present a combined density functional theory (DFT), one-step model of photoemission, and soft x-ray angle-resolved photoemission spectroscopy (SX-ARPES) study of the electronic…
Floquet topological state induced by light-driven band inversion in SnTe
F. Chassot, G. Kremer, A. Pulkkinen +7
High intensity coherent light can dress matter, realizing new hybrid phases that are not accessible in equilibrium. This effect results from the coherent interaction between Bloch…