Overview of project A05

Femtosecond Time-Resolved Soft X-Ray Spectroscopy for an Element Specific Analysis of Complex Nanostructures


Bovensiepen, Tarasevitch, Wende

This project investigates the non-equilibrium dynamics in time and space in complex materials after microscopic excitation by element specific probing using soft x-ray pulses which are generated at large scale unser facilities like synchrotron light sources and x-ray free electron laser or will be provided table-top using high harmonic generation. In order to analyse the microscopic principles of dynamics at interfaces we investigate simple model systems like heterostructures by near edge soft x-ray spectroscopy at absorption edges of the element of interest. So far, experiments at metal-insulator heterostructures used the absorption at the Fe L3 and the O K edge to achieve a microscopic understanding of energy transfer across the Fe/MgO interface.

figure A05

Schematic representation of UV / IR-pump/xray-probe investigations of Fe/MgO multilayers





Joachim Landers, Soma Salamon, Hilke Remmer, Frank Ludwig and Heiko Wende
In-Field Orientation and Dynamics of Ferrofluids Studied by Mössbauer Spectroscopy
ACS Appl. Mater. Interfaces 11, 3160 (2019)
DOI: 10.1021/acsami.8b16356

Louis Frentzel-Beyme, Marvin Kloß, Roman Pallach, Soma Salamon, Henning Moldenhauer, Joachim Landers, Heiko Wende, Jörg Debus and Sebastian Henke
Porous Purple Glass-a Cobalt Imidazolate Glass with Accessible Porosity from a Meltable Cobalt Imidazolate Framework
J. Mater. Chem. A 7, 985 (2019)
DOI: 10.1039/c8ta08016j

Felix Huttmann, Nico Rothenbach, Stefan Kraus, Katharina Ollefs, Lucas M. Arruda, Matthias Bernien, Danny Thonig, Anna Delin, Jonas Fransson, Kurt Kummer, Nicholas B. Brookes, Olle Eriksson, Wolfgang Kuch, Thomas Michely and Heiko Wende
Europium Cyclooctatetraene Nanowire Carpets: a Low-Dimensional, Organometallic, and Ferromagnetic Insulator
J. Phys. Chem. Lett. 10, 911 (2019)
DOI: 10.1021/acs.jpclett.8b03711

Andre Seyen, Roland Kohn, Uwe Bovensiepen, Dietrich von der Linde and Alexander Tarasevitch
Toward Attosecond Pulse Synthesis from Solids: Spectral shaping, Field Autocorrelation, and Two-Color Harmonic Generation
Phys. Rev. A 99, 033836 (2019)
DOI: 10.1103/PhysRevA.99.033836

Manuel Bridger, Oskar Naranjo-Montoya, Alexander Tarasevitch and Uwe Bovensiepen
Towards High Power Broad-Band OPCPA at 3 μm
Opt. Express 27, 31330 (2019)
DOI: 10.1364/OE.27.031330

N. Rothenbach, M. E. Gruner, K. Ollefs, C. Schmitz-Antoniak, S. Salamon, P. Zhou, R. Li, M. Mo, S. Park, X. Shen, S. Weathersby, J. Yang, X. J. Wang, R. Pentcheva, H. Wende, U. Bovensiepen, K. Sokolowski-Tinten and A. Eschenlohr 
Microscopic Non-Equilibrium Energy Transfer Dynamics in a Photoexcited Metal/Insulator Heterostructure

N. Rothenbach, M. E. Gruner, K. Ollefs, C. Schmitz-Antoniak, V. Begum, S. Salamon, P. Zhou, N. Pontius, R. Mitzner, C. Schüßler-Langeheine, K. Holldack, R. Pentcheva, U. Bovensiepen, A. Eschenlohr and H. Wende
Modeling the Spectroscopic Fine Structures of Pump-Induced Changes in Time-Resolved Soft x-Ray Absorption Spectroscopy of an Fe/MgO Multilayer

Benedikt Eggert, Markus E. Gruner, Katharina Ollefs, Ellen Schuster, Nico Rothenbach, Michael Y. Hu, Jiyong Zhao, Thomas S Toellner, Wolfgang Sturhahn, Rossitzza Pentcheva, Beatriz Roldan Cuenya, Esen E. Alp, Heiko Wende and Werner Keune
Interface-related Magnetic and Vibrational Properties in Fe/MgO Heterostructures from Nuclear Resonant Spectroscopy and First-Principles Calculations


Joachim Landers, Soma Salamon, Werner Keune, Markus Ernst Gruner, Maria Krautz, Jiyong Zhao, Michael Y. Hu, Thomas Toellner, Esen E. Alp, Oliver Gutfleisch and Heiko Wende
Determining the Vibrational Entropy Change in the Giant Magnetocaloric Material LaFe11.6S1.4 by Nuclear Resonant Inelastic x-Ray Scattering
Phys. Rev. B 98, 024417 (2018)
DOI: 10.1103/PhysRevB.98.024417