Speaker
Maxime Rumo
(Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg)
Description
We present an angle-resolved photoemission spectroscopy study of low-temperature adsorption of potassium on the 1T-TiSe2 charge density wave (CDW) compound. Combined with simulations of one-electron spectral functions, our measurements allow for discussing the impact of K on the CDW order parameter, chemical potential and spin-orbit coupling. Our study reveals a coverage-dependent intercalation mechanism of K in the 1T-TiSe2 van der Waals gap, a rigid-band model of electron doping, as well as similarities between the dependence of the CDW order parameter on the K concentration and doping-dependent phase diagrams of 1T-TiSe2.
Author
Maxime Rumo
(Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg)
Co-authors
Dr
Thomas Jaouen
(Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg)
Baptiste Hildebrand
(Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg)
Ms
Marie-Laure Mottas
(Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg)
Dr
Céline Barreteau
(Département of Quantum Matter Physics, University of Geneva)
Dr
Enrico Giannini
(Département of Quantum Matter Physics, University of Geneva)
Prof.
David Bowler
(London Centre for Nanotechnology and Department of Physics and Astronomy, University College, London,)
Prof.
Claude Monney
(Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg)
Prof.
Philipp Aebi
(Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg)