Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Grånäs, Oscar"'
Autor:
Turenne, Diego, Vaskivskiy, Igor, Sokolowski-Tinten, Klaus, Wang, Xijie, Reid, Alexander H., Shen, Xiaoshe, Lin, Ming-Fu, Park, Suji, Weathersby, Stephen, Kozina, Michael, Hoffmann, Matthias, Wang, Jian, Sebesta, Jakub, Takahashi, Yukiko K., Grånäs, Oscar, Oppeneer, Peter, Dürr, Hermann A.
Light-matter interaction at the nanoscale in magnetic alloys and heterostructures is a topic of intense research in view of potential applications in high-density magnetic recording. While the element-specific dynamics of electron spins is directly a
Externí odkaz:
http://arxiv.org/abs/2404.04980
Autor:
Rupush, William, Grånäs, Oscar
We present a new proposal for distinguishing heat from work based on a control-theoretic observability decomposition. We derive a Hermitian operator representing instantaneous dissipation of observable energy, and suggest a generalization of the von-
Externí odkaz:
http://arxiv.org/abs/2403.02022
Autor:
Šebesta, Jakub, Grånäs, Oscar
The use of ultrashort laser pulses to investigate the response of materials on femtosecond time-scales enables detailed tracking of charge, spin and lattice degrees of freedom. When pushing the limits of the experimental resolution, connection to the
Externí odkaz:
http://arxiv.org/abs/2310.16150
Autor:
Ryan, Sinéad A., Johnsen, Peter C., Elhanoty, Mohamed F., Grafov, Anya, Li, Na, Delin, Anna, Markou, Anastasios, Lesne, Edouard, Felser, Claudia, Eriksson, Olle, Kapteyn, Henry C., Grånäs, Oscar, Murnane, Margaret M.
Publikováno v:
Sci. Adv. 9, eadi1428 (2023)
The direct manipulation of spins via light may provide a path toward ultrafast energy-efficient devices. However, distinguishing the microscopic processes that can occur during ultrafast laser excitation in magnetic alloys is challenging. Here, we st
Externí odkaz:
http://arxiv.org/abs/2305.16455
Extended Lagrangian Born-Oppenheimer molecular dynamics (XL-BOMD) [Phys. Rev. Lett. vol. 100, 123004 (2008)] is combined with Kohn-Sham density functional theory (DFT) using a DFT+U correction based on the Hubbard model. This combined XL-BOMD and DFT
Externí odkaz:
http://arxiv.org/abs/2303.03655
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:
Mante, Pierre-Adrien, Ong, Chin Shen, Shapiro, Daniel Finkelstein, Yartsev, Arkady, Grånäs, Oscar, Eriksson, Olle
Phase transitions are ubiquitous, appearing at every length scale from atoms to galaxies. In condensed matter, ultrafast laser pulses drive materials to highly non-equilibrium conditions allowing transitions to new phases of matter not attainable und
Externí odkaz:
http://arxiv.org/abs/2203.13509
Autor:
Wang, Xiaocui, Engel, Robin Y., Vaskivskyi, Igor, Turenne, Diego, Shokeen, Vishal, Yaroslavtsev, Alexander, Grånäs, Oscar, Knut, Ronny, Schunck, Jan O., Dziarzhytski, Siarhei, Brenner, Günter, Wang, Ru-Pan, Kuhlmann, Marion, Kuschewski, Frederik, Bronsch, Wibke, Schüßler-Langeheine, Christian, Styervoyedov, Andriy, Parkin, Stuart S. P., Parmigiani, Fulvio, Eriksson, Olle, Beye, Martin, Dürr, Hermann A.
Wide-band-gap insulators such as NiO offer the exciting prospect of coherently manipulating electronic correlations with strong optical fields. Contrary to metals where rapid dephasing of optical excitation via electronic processes occurs, the sub-ga
Externí odkaz:
http://arxiv.org/abs/2201.03280
Stoner and Heisenberg excitations in magnetic materials are inherently different. The former involves an effective reduction of the exchange splitting, whereas the latter comprises excitation of spin-waves. In this work, we test the impact of these t
Externí odkaz:
http://arxiv.org/abs/2111.14607
Autor:
Sinelnikova, Anna, Mandl, Thomas, Agélli, Harald, Grånäs, Oscar, Marklund, Erik G., Caleman, Carl, De Santis, Emiliano
Publikováno v:
Biophys J. 120, Issue 17, Pages 3709-3717, 2021
The emergence of ultra-fast X-ray free-electron lasers opens the possibility of imaging single molecules in the gas phase at atomic resolution. The main disadvantage of this imaging technique is the unknown orientation of the sample exposed to the X-
Externí odkaz:
http://arxiv.org/abs/2102.03145