Ergebnisse einschränken

Robustness of the charge-ordered phases in ${\mathrm{IrTe}}_{2}$ against photoexcitation

Monney, Claude ; Schuler, A. ; Jaouen, T. ; Mottas, Marie-Laure ; Wolf, Thomas ; Merz, M. ; Muntwiler, Matthias ; Castiglioni, L. ; Aebi, Philipp ; Weber, F. ; Hengsberger, M.

In: Physical Review B, 2018, vol. 97, no. 7, p. 075110

We present a time-resolved angle-resolved photoelectron spectroscopy study of IrTe2, which undergoes two first-order structural and charge-ordered phase transitions on cooling below 270 K and below 180 K. The possibility of inducing a phase transition by photoexcitation with near-infrared femtosecond pulses is investigated in the charge-ordered phases. We observe changes of the spectral...

Prediction Error of the Chain Ladder Reserving Method applied to Correlated Run-off Triangles

Merz, M. ; Wüthrich, M. V.

In: Annals of Actuarial Science, 2007, vol. 2, no. 1, p. 25-50

Mean Square Error of Prediction in the Bornhuetter-Ferguson Claims Reserving Method

Alai, D. H. ; Merz, M. ; Wüthrich, M. V.

In: Annals of Actuarial Science, 2009, vol. 4, no. 1, p. 7-31

X-ray absorption spectroscopy study of the electronic and magnetic proximity effects in ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7}/{\mathrm{La}}_{2/3}{\mathrm{Ca}}_{1/3}{\mathrm{MnO}}_{3}$ and ${\mathrm{La}}_{2$-${}x}{\mathrm{Sr}}_{x}{\mathrm{CuO}}_{4}/{\mathrm{La}}_{2/3}{\mathrm{Ca}}_{1/3}{\mathrm{MnO}}_{3}$ multilayers

Uribe-Laverde, Miguel Angel ; Das, Saikat ; Sen, Kaushik ; Marozau, Ivan ; Perret, E. ; Alberca, A. ; Heidler, J. ; Piamonteze, C. ; Merz, M. ; Nagel, P. ; Schuppler, S. ; Munzar, Dominik ; Bernhard, Christian

In: Physical Review B, 2014, vol. 90, no. 20, p. 205135

With x-ray absorption spectroscopy we investigated the orbital reconstruction and the induced ferromagnetic moment of the interfacial Cu atoms in YBa2Cu3O7/La2/3Ca1/3MnO3 (YBCO/LCMO) and La2−xSrxCuO4/La2/3Ca1/3MnO3 (LSCO/LCMO) multilayers. We demonstrate that these electronic and magnetic proximity effects are coupled and are common to these cuprate/manganite multilayers. Moreover, we show that...

Magnetic Proximity Effect in YBa₂Cu₃O₇/La2/3Ca1/3MnO₃ and YBa₂Cu₃O₇/LaMnO₃₊ Superlattices

Satapathy, Dillip Kumar ; Uribe-Laverde, M. A. ; Marozau, I. ; Malik, Vivek K. ; Das, S. ; Wagner, Th. ; Marcelot, C. ; Stahn, J. ; Brück, S. ; Rühm, A. ; Macke, S. ; Tietze, T. ; Goering, E. ; Frañó, A. ; Kim, J. -H. ; Wu, M. ; Benckiser, E. ; Keimer, B. ; Devishvili, A. ; Toperverg, B. P. ; Merz, M. ; Nagel, P. ; Schuppler, S. ; Bernhard, Christian

In: Physical Review Letters, 2012, vol. 108, no. 19, p. 197201

Using neutron reflectometry and resonant x-ray techniques we studied the magnetic proximity effect (MPE) in superlattices composed of superconducting YBa₂Cu₃O₇ and ferromagnetic-metallic La0.67Ca0.33MnO₃ or ferromagnetic-insulating LaMnO₃₊. We find that the MPE strongly depends on the electronic state of the manganite layers, being pronounced for the...