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High-dimensional peaks-over-threshold inference

de Fondeville, R. ; Davison, A C.

In: Biometrika, 2018, vol. 105, no. 3, p. 575-592

Quantum description of a rotating and vibrating molecule

Brechet, Sylvain ; Reuse, François ; Maschke, Klaus ; Ansermet, Jean-Philippe

In: The European Physical Journal D, 2015, vol. 69, no. 7, p. 1-28

Mapping the unoccupied state dispersions in ${\mathrm{Ta}}_{2}{\mathrm{NiSe}}_{5}$ with resonant inelastic x-ray scattering

Monney, Claude ; Herzog, Marc ; Pulkkinen, Aki ; Huang, Y. ; Pelliciari, Jonathan ; Olalde-Velasco, P. ; Katayama, Naoyuk ; Nohara, Minoru ; Takagi, Hide ; Schmitt, Thorsten ; Mizokawa, Takashi

In: Physical Review B, 2020, vol. 102, no. 8, p. 085148

The transition metal chalcogenide Ta2NiSe5 undergoes a second-order phase transition at Tc=328K involving a small lattice distortion. Below Tc, a band gap at the center of its Brillouin zone increases up to about 0.35 eV. In this work, we study the electronic structure of Ta2NiSe5 in its low-temperature semiconducting phase, using resonant inelastic x-ray scattering (RIXS) at the Ni L3 edge....

Coupling of electronic and nuclear motion in a negative ion resonance: Experimental and theoretical study of benzene

Allan, Michael ; Čurík, Roman ; Čársky, Petr

In: The Journal of Chemical Physics, 2019, vol. 151, no. 6, p. 064119

We present calculated and measured elastic and vibrational excitation cross sections in benzene with the objective to assess the reliability of the theoretical method and to shed more light on how the electronic motion of the incoming electron is coupled with the nuclear motion of the vibrations. The calculation employed the discrete momentum representation method which involves solving the...

Laboratory based XAS measurements, electron-induced double K-shell ionization of Sc, Cr and Cu : and, Chemical sensitivity of photoinduced Kʰβ hypersatelite transition in Cr compounds

Zeeshan, Faisal ; Dousse, Jean-Claude (Dir.)

Thèse de doctorat : Université de Fribourg, 2017 ; no. 2052.

Cette thèse de doctorat contient trois différents projets qui appartiennent aux domaines de la physique atomique des couches profondes et de la spectroscopie de rayons X en haute résolution. Le premier projet concerne l’étude des spectres d’absorption (XAS) K et L de quelques éléments de transition 3d, 4d et 5d. Les mesures ont été réalisées à Fribourg avec le spectromètre à...

High-harmonic generation in quantum spin systems

Takayoshi, Shintaro ; Murakami, Yuta ; Werner, Philipp

In: Physical Review B, 2019, vol. 99, no. 18, p. 184303

We theoretically study the high-harmonic generation (HHG) in one-dimensional spin systems. While in electronic systems the driving by ac electric fields produces radiation from the dynamics of excited charges, we consider here the situation where spin systems excited by a magnetic field pulse generate radiation via a time- dependent magnetization. Specifically, we study the magnetic dipole...

Cross section ratios of double-to-single K-shell ionization induced by electron impact in metallic Sc, Cr and Cu targets

Zeeshan, Faisal ; Dousse, Jean-Claude ; Hoszowska, Joanna

In: Journal of Electron Spectroscopy and Related Phenomena, 2019, vol. 233, p. 11–21

Determination of conduction and valence band electronic structure of anatase and rutile TiO 2

SZLACHETKO, JAKUB ; MICHALOW-MAUKE, KATARZYNA ; NACHTEGAAL, MAARTEN ; SÁ, JACINTO

In: Journal of Chemical Sciences, 2014, vol. 126, no. 2, p. 511-515

Influence of moisture on the vibro-mechanical properties of bio-engineered wood

Gilani, Marjan ; Tingaut, Philippe ; Heeb, Markus ; Schwarze, Francis

In: Journal of Materials Science, 2014, vol. 49, no. 22, p. 7679-7687

Mechanisms for acoustic emissions generation during granular shearing

Michlmayr, Gernot ; Or, Dani

In: Granular Matter, 2014, vol. 16, no. 5, p. 627-640