Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Ollefs, Katharina"'
Autor:
Kämmerer, Lea, Kämmerer, Gérald, Gruber, Manuel, Grunwald, Jan, Lojewski, Tobias, Mercadier, Laurent, Guyader, Loïc Le, Carley, Robert, Carinan, Cammille, Gerasimova, Natalia, Hickin, David, Van Kuiken, Benjamin E., Mercurio, Giuseppe, Teichmann, Martin, Kuppusamy, Senthil Kumar, Scherz, Andreas, Ruben, Mario, Sokolowski-Tinten, Klaus, Eschenlohr, Andrea, Ollefs, Katharina, Schmitz-Antoniak, Carolin, Tuczek, Felix, Kratzer, Peter, Bovensiepen, Uwe, Wende, Heiko
The photoinduced switching of Fe(II)-based spin-crossover complexes from singlet to quintet takes place at ultrafast time scales. This a priori spin-forbidden transition triggered numerous time-resolved experiments of solvated samples to elucidate th
Externí odkaz:
http://arxiv.org/abs/2312.01483
Autor:
Xiao, Zhengyu, Xie, Ruiwen, Maccari, Fernando, Klaassen, Philipp, Eggert, Benedikt, Wang, Di, Dai, Yuting, Lizarraga, Raquel, Lill, Johanna, Helbig, Tom, Wende, Heiko, Kummer, Kurt, Ollefs, Katharina, Skokov, Konstantin, Zhang, Hongbin, Quan, Zhiyong, Xu, Xiaohong, Kruk, Robert, Hahn, Horst, Gutfleisch, Oliver, Ye, Xinglong
Rare earth-transition metal ferrimagnets, featuring antiferromagnetically coupled, inequivalent magnetic sublattices, have garnered increasing interest in the burgeoning field of ferrimagnetic spintronics. However, controlling their magnetism with lo
Externí odkaz:
http://arxiv.org/abs/2312.00643
Autor:
Lojewski, Tobias, Golez, Denis, Ollefs, Katharina, Guyader, Loïc Le, Kämmerer, Lea, Rothenbach, Nico, Engel, Robin Y., Miedema, Piter S., Beye, Martin, Chiuzbăian, Gheorghe S., Carley, Robert, Gort, Rafael, Van Kuiken, Benjamin E., Mercurio, Giuseppe, Schlappa, Justina, Yaroslavtsev, Alexander, Scherz, Andreas, Döring, Florian, David, Christian, Wende, Heiko, Bovensiepen, Uwe, Eckstein, Martin, Werner, Philipp, Eschenlohr, Andrea
Photo-doped states in strongly correlated charge transfer insulators are characterized by $d$-$d$ and $d$-$p$ interactions and the resulting intertwined dynamics of charge excitations and local multiplets. Here we use femtosecond x-ray absorption spe
Externí odkaz:
http://arxiv.org/abs/2305.10145
Autor:
Gkouzia, Georgia, Günzing, Damian, Xie, Ruiwen, Weßels, Teresa, Kovács, András, Diaye, Alpha T. N, Major, Márton, Palakkal, J. P., Dunin-Borkowski, Rafal E., Wende, Heiko, Zhang, Hongbin, Ollefs, Katharina, Alff, Lambert
This work investigates the effect of copper substitution on the magnetic properties of SmCo$_{5}$ thin films synthesized by molecular beam epitaxy. A series of thin films with varying concentrations of Cu were grown under otherwise identical conditio
Externí odkaz:
http://arxiv.org/abs/2304.06457
Autor:
Eggert, Benedikt, Lill, Johanna, Günzing, Damian, Pillich, Cynthia, Terwey, Alexandra, Radulov, Ilyia A., Wilhelm, Fabrice, Rogalev, Andrei, Rovezzi, Mauro, Skokov, Konstantin, Ollefs, Katharina, Gutfleisch, Oliver, Gruner, Markus E., Wende, Heiko
Magnetic cooling has the potential to replace conventional gas compression refrigeration. Materials such as La(Fe,Si)$_{13}$ exhibit a sizeable first-order magnetocaloric effect, and it is possible to tailor the phase transition towards room temperat
Externí odkaz:
http://arxiv.org/abs/2304.03065
Autor:
Eggert, Benedikt, Çakır, Aslı, Günzing, Damian, Josten, Nicolas, Scheibel, Franziska, Brand, Richard A., Farle, Michael, Acet, Mehmet, Wende, Heiko, Ollefs, Katharina
The Shell-ferromagnetic effect originates from the segregation process in off-stochiometric Ni-Mn-based Heusler. In this work, we investigate the precipitation process of L2$_1$-ordered Ni$_2$MnSn and L1$_0$-ordered NiMn in off-stochiometric Ni$_{50}
Externí odkaz:
http://arxiv.org/abs/2304.03033
Autor:
Engel, Robin Y., Alexander, Oliver, Atak, Kaan, Bovensiepen, Uwe, Buck, Jens, Carley, Robert, Cascella, Michele, Chardonnet, Valentin, Chiuzbaian, Gheorghe Sorin, David, Christian, Döring, Florian, Eschenlohr, Andrea, Gerasimova, Natalia, de Groot, Frank, Guyader, Loïc Le, Humphries, Oliver S., Izquierdo, Manuel, Jal, Emmanuelle, Kubec, Adam, Laarmann, Tim, Lambert, Charles-Henri, Lüning, Jan, Marangos, Jonathan P., Mercadier, Laurent, Mercurio, Giuseppe, Miedema, Piter S., Ollefs, Katharina, Pfau, Bastian, Rösner, Benedikt, Rossnagel, Kai, Rothenbach, Nico, Scherz, Andreas, Schlappa, Justine, Scholz, Markus, Schunck, Jan O., Setoodehnia, Kiana, Stamm, Christian, Techert, Simone, Vinko, Sam M., Wende, Heiko, Yaroslavtsev, Alexander A., Yin, Zhong, Beye, Martin
The pulse intensity from X-ray free-electron lasers (FELs) can create extreme excitation densities in solids, entering the regime of non-linear X-ray-matter interactions. We show L3-edge absorption spectra of metallic nickel thin films with fluences
Externí odkaz:
http://arxiv.org/abs/2211.17008
Autor:
Guyader, Loïc Le, Eschenlohr, Andrea, Beye, Martin, Schlotter, William, Döring, Florian, Carinan, Cammille, Hickin, David, Agarwal, Naman, Boeglin, Christine, Bovensiepen, Uwe, Buck, Jens, Carley, Robert, Castoldi, Andrea, D'Elia, Alessandro, Delitz, Jan-Torben, Ehsan, Wajid, Engel, Robin, Erdinger, Florian, Fangohr, Hans, Fischer, Peter, Fiorini, Carlo, Föhlisch, Alexander, Gelisio, Luca, Gensch, Michael, Gerasimova, Natalia, Gort, Rafael, Hansen, Karsten, Hauf, Steffen, Izquierdo, Manuel, Jal, Emmanuelle, Kamil, Ebad, Karabekyan, Suren, Kluyver, Thomas, Laarmann, Tim, Lojewski, Tobias, Lomidze, David, Maffessanti, Stefano, Mamyrbayev, Talgat, Marcelli, Augusto, Mercadier, Laurent, Mercurio, Giuseppe, Miedema, Piter S., Ollefs, Katharina, Rossnagel, Kai, Rösner, Benedikt, Rothenbach, Nico, Samartsev, Andrey, Schlappa, Justine, Setoodehnia, Kiana, Chiuzbaian, Gheorghe Sorin, Spieker, Lea, Stamm, Christian, Stellato, Francesco, Techert, Simone, Teichmann, Martin, Turcato, Monica, Van Kuiken, Benjamin, Wende, Heiko, Yaroslavtsev, Alexander, Zhu, Jun, Molodtsov, Serguei, David, Christian, Porro, Matteo, Scherz, Andreas
Publikováno v:
J. Synchrotron Rad. (2023). 30, 284-300
Femtosecond transient soft X-ray Absorption Spectroscopy (XAS) is a very promising technique that can be employed at X-ray Free Electron Lasers (FELs) to investigate out-of-equilibrium dynamics for material and energy research. Here we present a dedi
Externí odkaz:
http://arxiv.org/abs/2211.04265
Autor:
Lojewski, Tobias, Elhanoty, Mohamed F., Guyader, Loïc Le, Grånäs, Oscar, Agarwal, Naman, Boeglin, Christine, Carley, Robert, Castoldi, Andrea, David, Christian, Deiter, Carsten, Döring, Florian, Engel, Robin Y., Erdinger, Florian, Fangohr, Hans, Fiorini, Carlo, Fischer, Peter, Gerasimova, Natalia, Gort, Rafael, de Groot, Frank, Hansen, Karsten, Hauf, Steffen, Hickin, David, Izquierdo, Manuel, Van Kuiken, Benjamin E., Kvashnin, Yaroslav, Lambert, Charles-Henri, Lomidze, David, Maffessanti, Stefano, Mercadier, Laurent, Mercurio, Giuseppe, Miedema, Piter S., Ollefs, Katharina, Pace, Matthias, Porro, Matteo, Rezvani, Javad, Rösner, Benedikt, Rothenbach, Nico, Samartsev, Andrey, Scherz, Andreas, Schlappa, Justina, Stamm, Christian, Teichmann, Martin, Thunstrom, Patrik, Turcato, Monica, Yaroslavtsev, Alexander, Zhu, Jun, Beye, Martin, Wende, Heiko, Bovensiepen, Uwe, Eriksson, Olle, Eschenlohr, Andrea
The complex electronic structure of metallic ferromagnets is determined by a balance between exchange interaction, electron hopping leading to band formation, and local Coulomb repulsion. The interplay between the respective terms of the Hamiltonian
Externí odkaz:
http://arxiv.org/abs/2210.13162
Autor:
Zhang, Yixuan, Xie, Ruiwen, Long, Teng, Günzing, Damian, Wende, Heiko, Ollefs, Katharina J., Zhang, Hongbin
X-ray absorption spectroscopy (XAS) is a well-established method for in-depth characterization of the electronic structure due to its sensitivity to the local coordination and electronic states of the active ions. In practice hundreds of energy point
Externí odkaz:
http://arxiv.org/abs/2203.07892