Overview of project A07
Charge Transfer, Diffusion, and Lattice-Mediated Dynamics in Oxide Heterostructures
Optically induced charge transfer and charge carrier diffusion are central processes occurring in the non-equilibrium state after femtosecond laser excitation of solids and their heterostructures. Elucidating their microscopic nature and competing processes is highly relevant not only for a fundamental understanding of ultrafast charge carrier dynamics, but also with a view towards technological applications. This project aims at a microscopic analysis and manipulation of non-equilibrium charge transfer across the interfaces of perovskite oxide heterostructures, which serve as model systems with well-controlled properties, as well as charge carrier diffusion. We further aim to elucidate competing phonon-mediated dynamics leading to charge carrier trapping and energy transfer by interfacial phonon modes. Interface-sensitive non-linear optical spectroscopy and element-sensitive x-ray absorption spectroscopy will be employed as complementary femtosecond time-resolved probes.
Figure: Charge Transfer, Diffusion, and Lattice-Mediated Dynamics in Oxide Heterostructures
Publications
2023
Tobias Lojewski, Mohamed F. Elhanoty, Loïc Le Guyader, Oscar Grånäs, Naman Agarwal, Christine Boeglin, Robert Carley, Andrea Castoldi, Christian David, Carsten Deiter, Florian Döring, RobinY Engel, Florian Erdinger, Hans Fangohr, Carlo Fiorini, Peter Fischer, Natalia Gerasimova, Rafael Gort, Frank deGroot, Karsten Hansen, Steffen Hauf, David Hickin, Manuel Izquierdo, Benjamin E. Van Kuiken, Yaroslav Kvashnin, Charles-Henri Lambert, David Lomidze, Stefano Maffessanti, Laurent Mercadier, Giuseppe Mercurio, Piter S. Miedema, Katharina Ollefs, Matthias Pace, Matteo Porro, Javad Rezvani, Benedikt Rösner, Nico Rothenbach, Andrey Samartsev, Andreas Scherz, Justina Schlappa, Christian Stamm, Martin Teichmann, Patrik Thunström, Monica Turcato, Alexander Yaroslavtsev, Jun Zhu, Martin Beye, Heiko Wende, Uwe Bovensiepen, Olle Eriksson and Andrea Eschenlohr
The Interplay of Local Electron Correlations and Ultrafast Spin Dynamics in fcc Ni
Mater. Res. Lett. 11, 655 (2023)
DOI: 10.1080/21663831.2023.2210606
Vijaya Begum-Hudde, Tobias Lojewski, Nico Rothenbach, Benedikt Eggert, Andrea Eschenlohr, Katharina Ollefs, Markus Ernst Gruner and Rossitza Pentcheva
Nature of Excitons in the Ti L and O K Edges of X-Ray Absorption Spectra in Bulk SrTiO3 from a Combined First Principles and Many-Body Theory Approach
Phys. Rev. Research 5, 013199 (2023)
DOI: 10.1103/PhysRevResearch.5.013199
Loïc Le Guyader, Andrea Eschenlohr, Martin Beye, William Schlotter, Florian Döring, Cammille Carinan, David Hickin, Naman Agarwal, Christine Boeglin, Uwe Bovensiepen, Jens Buck, Robert Carley, Andrea Castoldi, Alessandro D'Elia, Jan Torben Delitz, Wajid Ehsan, Robin Engel, Florian Erdinger, Hans Fangohr, Peter Fischer, Carlo Fiorini, Alexander Föhlisch, Luca Gelisio, Michael Gensch, Natalia Gerasimova, Rafael Gort, Karsten Hansen, Steffen Hauf, Manuel Izquierdo, Emmanuelle Jal, Ebad Kamil, Suren Karabekyan, Thomas Kluyver, Tim Laarmann, Tobias Lojewski, David Lomidze, Stefano Maffessanti, Talgat Mamyrbayev, Augusto Marcelli, Laurent Mercadier, Giuseppe Mercurio, Piter S. Miedema, Katharina Ollefs, Kai Rossnagel, Benedikt Rösner, Nico Rothenbach, Andrey Samartsev, Justine Schlappa, Kiana Setoodehnia, Gheorghe Sorin Chiuzbaian, Lea Spieker, Christian Stamm, Francesco Stellato, Simone Techert, Martin Teichmann, Monica Turcato, Benjamin Van Kuiken, Heiko Wende, Alexander Yaroslavtsev, Jun Zhu, Serguei Molodtsov, Christian David, Matteo Porro, Andreas Scherz and Jan-Torben Delitz
Photon-Shot-Noise-Limited Transient Absorption Soft X-Ray Spectroscopy at the European XFEL
J. Synchrotron Rad. 30, 284 (2023)
DOI: 10.1107/S1600577523000619
Robin Y. Engel, Oliver Alexander, Kaan Atak, Uwe Bovensiepen, Jens Buck, Robert Carley, Michele Cascella, Valentin Chardonnet, Gheorghe Sorin Chiuzbaian, Christian David, Florian Döring, Andrea Eschenlohr, Natalia Gerasimova, Frank de Groot, Loïc Le Guyader, Oliver S. Humphries, Manuel Izquierdo, Emmanuelle Jal, Adam Kubec, Tim Laarmann, Charles-Henri Lambert, Jan Lüning, Jonathan P. Marangos, Laurent Mercadier, Giuseppe Mercurio, Piter S. Miedema, Katharina Ollefs, Bastian Pfau, Benedikt Rösner, Kai Rossnagel, Nico Rothenbach, Andreas Scherz, Justine Schlappa, Markus Scholz, Jan O. Schunck, Kiana Setoodehnia, Christian Stamm, Simone Techert, Sam M. Vinko, Heiko Wende, Alexander A. Yaroslavtsev, Zhong Yin and Martin Beye
Electron Population Dynamics in Resonant Non-Linear X-Ray Absorption in Nickel at a Free-Electron Laser
Struct. Dyn. 10, 054501 (2023)
DOI: 10.1063/4.0000206
Andrea Eschenlohr
Spin Dynamics at Interfaces on Femtosecond Timescales
2023 IEEE International Magnetic Conference - Short Papers, pp. 1-2 (2023)
DOI: 10.1109/INTERMAGShortPapers58606.2023.10228827
2022
Peter Elliott, Andrea Eschenlohr, Jinghao Chen, Sam Shallcross, Uwe Bovensiepen, John Kay Dewhurst and Sangeeta Sharma
Transient Spin Injection Efficiencies at Ferromagnet–Metal Interfaces
Adv. Mater. Interf. 9, 2201233 (2022)
DOI: 10.1002/admi.202201233
2021
Nico Rothenbach, Markus Ernst Gruner, Katharina Ollefs, Carolin Schmitz-Antoniak, Soma Salamon, Ping Zhou, Renkai Li, Mianzhen Mo, Suji Park, Xiaohong Shen, Stephen P. Weathersby, Jun Yang, Xijie Wang, Ondrej Šipr, Hubert Ebert, Klaus Sokolowski-Tinten, Rossitza Pentcheva, Uwe Bovensiepen, Andrea Eschenlohr and Heiko Wende
Effect of Lattice Excitations on Transient Near-Edge X-Ray Absorption Spectroscopy
Phys. Rev. B 104, 144302 (2021)
DOI: 10.1103/PhysRevB.104.144302
2020
Andrea Eschenlohr
Spin Dynamics at Interfaces on Femtosecond Timescales
J. Phys: Cond. Matter 33, 013001 (2020)
DOI: 10.1088/1361-648x/abb519