1
|
Thielemann-Kühn N, Amrhein T, Bronsch W, Jana S, Pontius N, Engel RY, Miedema PS, Legut D, Carva K, Atxitia U, van Kuiken BE, Teichmann M, Carley RE, Mercadier L, Yaroslavtsev A, Mercurio G, Le Guyader L, Agarwal N, Gort R, Scherz A, Dziarzhytski S, Brenner G, Pressacco F, Wang RP, Schunck JO, Sinha M, Beye M, Chiuzbăian GS, Oppeneer PM, Weinelt M, Schüßler-Langeheine C. Optical control of 4 f orbital state in rare-earth metals. Sci Adv 2024; 10:eadk9522. [PMID: 38630818 PMCID: PMC11023516 DOI: 10.1126/sciadv.adk9522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 03/14/2024] [Indexed: 04/19/2024]
Abstract
A change of orbital state alters the coupling between ions and their surroundings drastically. Orbital excitations are hence key to understand and control interaction of ions. Rare-earth elements with strong magneto-crystalline anisotropy (MCA) are important ingredients for magnetic devices. Thus, control of their localized 4f magnetic moments and anisotropy is one major challenge in ultrafast spin physics. With time-resolved x-ray absorption and resonant inelastic scattering experiments, we show for Tb metal that 4f-electronic excitations out of the ground-state multiplet occur after optical pumping. These excitations are driven by inelastic 5d-4f-electron scattering, altering the 4f-orbital state and consequently the MCA with important implications for magnetization dynamics in 4f-metals and more general for the excitation of localized electronic states in correlated materials.
Collapse
Affiliation(s)
- Nele Thielemann-Kühn
- Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany
| | - Tim Amrhein
- Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany
| | - Wibke Bronsch
- Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany
- Elettra-Sincrotrone Trieste S.C.p.A., Strada statale 14 – km 163,5, 34149 Basovizza, Trieste, Italy
| | - Somnath Jana
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin, Germany
| | - Niko Pontius
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin, Germany
| | - Robin Y. Engel
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Piter S. Miedema
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Dominik Legut
- VSB - Technical University Ostrava, IT4Innovations, 708 00 Ostrava, Czech Republic
- Charles University, Faculty of Mathematics and Physics, DCMP, 12116 Prague 2, Czech Republic
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, CZ-121 16 Prague, Czech Republic
| | - Karel Carva
- Charles University, Faculty of Mathematics and Physics, DCMP, 12116 Prague 2, Czech Republic
| | - Unai Atxitia
- Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany
- Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| | | | | | | | | | - Alexander Yaroslavtsev
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
- Uppsala University, Department of Physics and Astronomy, P.O. Box 516, 75120 Uppsala, Sweden
| | | | | | - Naman Agarwal
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Rafael Gort
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Andres Scherz
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Günter Brenner
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Federico Pressacco
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Ru-Pan Wang
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg, Physics Department, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Jan O. Schunck
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg, Physics Department, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Mangalika Sinha
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Martin Beye
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Gheorghe S. Chiuzbăian
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement,75005 Paris, France
| | - Peter M. Oppeneer
- Uppsala University, Department of Physics and Astronomy, P.O. Box 516, 75120 Uppsala, Sweden
| | - Martin Weinelt
- Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany
| | | |
Collapse
|
2
|
Hohenberger M, Symes DR, Lazarus J, Doyle HW, Carley RE, Moore AS, Gumbrell ET, Notley MM, Clarke RJ, Dunne M, Smith RA. Observation of a velocity domain cooling instability in a radiative shock. Phys Rev Lett 2010; 105:205003. [PMID: 21231241 DOI: 10.1103/physrevlett.105.205003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Indexed: 05/30/2023]
Abstract
We report on experimental investigations into strong, laser-driven, radiative shocks in cluster media. Cylindrical shocks launched with several joules of deposited energy exhibit strong radiative effects including rapid deceleration, radiative preheat, and shell thinning. Using time-resolved propagation data from single-shot streaked Schlieren measurements, we have observed temporal modulations on the shock velocity, which we attribute to the thermal cooling instability, a process which is believed to occur in supernova remnants but until now has not been observed experimentally.
Collapse
Affiliation(s)
- M Hohenberger
- Laser Consortium, Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|