Johan Söderström
Senior Lecturer/Associate Professor at Department of Physics and Astronomy; X-ray Photon Science
- Telephone:
- +46 18 471 36 05
- Mobile phone:
- +46 70 480 04 47
- E-mail:
- johan.soderstrom@physics.uu.se
- Visiting address:
- Ångströmlaboratoriet, Regementsvägen 10
752 37 Uppsala - Postal address:
- Box 524
751 20 UPPSALA
Senior Lecturer/Associate Professor at Department of Physics and Astronomy; X-ray Photon Science; Chemical and Bio-Molecular Physics
- Telephone:
- +46 18 471 36 05
- Mobile phone:
- +46 70 480 04 47
- E-mail:
- johan.soderstrom@physics.uu.se
- Visiting address:
- Ångströmlaboratoriet, Regementsvägen 10
752 37 Uppsala - Postal address:
- Box 524
751 20 UPPSALA
- CV:
- Download CV
- ORCID:
- 0000-0002-9647-0394
Short presentation
My main research interest is the fundamental interaction between X-rays and small molecular systems, which I use to probe the electronic structure of atoms ans molecules - the building blocks of out universe.
I am also interested in developing instrumentation for science, primarily for soft X-ray spectroscopy.
Biography
Ever since I started my Ph. D. studies I have been interested in isolated atoms and molecules, that is matter in the gaseous phase as well as developing instruments for performing new science.
As a Ph. D. student I developed a new type of spectroscopy called XETECO, for the studies of gaseuos species. This is all well described in my thesis here.
Then, as a Post Doc I worked together with Catalin Miron in the finalisation of the PLEIADES beamline at the synchrotron SOLEIL in Paris. This beamline is also ment for studies of gaseous species.
When I had finished my Post Doc I continued my interest in advancing science through building new equipment - this time at Uppsala University where I have been building the HELIOS laboratory which is an HHG laboratory for studies of dynamics in matter.
At the moment I keep driving my main interest in studying fundamental interactions between X-rays and atoms and small molecules using soft X-ray spectroscopy. In order to do this I make use of national and international large scale facilities such as MAX-IV and the European XFEL.

Publications
Selection of publications
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A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
Part of Journal of Synchrotron Radiation, p. 1264-1275, 2024
- DOI for A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
- Download full text (pdf) of A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
-
Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
Part of Science Advances, 2024
- DOI for Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
- Download full text (pdf) of Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
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Quantum watch and its intrinsic proof of accuracy
Part of Physical Review Research, 2022
- DOI for Quantum watch and its intrinsic proof of accuracy
- Download full text (pdf) of Quantum watch and its intrinsic proof of accuracy
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Photon-recoil imaging: Expanding the view of nonlinear x-ray physics
Part of Science, p. 1630-1633, 2020
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Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2020
- DOI for Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
- Download full text (pdf) of Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
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Rydberg-Resolved Resonant Inelastic Soft X-Ray Scattering: Dynamics at Core Ionization Thresholds
Part of Physical Review Letters, 2015
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The ESCA molecule-Historical remarks and new results
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 191-197, 2012
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Nonstoichiometric Intensities in Core Photoelectron Spectroscopy
Part of Physical Review Letters, p. 193005, 2012
Recent publications
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Interference between One-and Two-Electron Channels in Resonant Inelastic X-Ray Scattering
Part of Physical Review Letters, 2025
- DOI for Interference between One-and Two-Electron Channels in Resonant Inelastic X-Ray Scattering
- Download full text (pdf) of Interference between One-and Two-Electron Channels in Resonant Inelastic X-Ray Scattering
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Elemental asymmetries of spin and electron dynamics in an insulating ferrimagnet
Part of Applied Physics Letters, 2025
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Emergence of pseudoresonance in high-intensity resonant inelastic x-ray scattering
Part of Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2025
- DOI for Emergence of pseudoresonance in high-intensity resonant inelastic x-ray scattering
- Download full text (pdf) of Emergence of pseudoresonance in high-intensity resonant inelastic x-ray scattering
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Non-local X-ray intermolecular radiative decay probes solvation shell of ions in water
Part of Nature Communications, 2025
- DOI for Non-local X-ray intermolecular radiative decay probes solvation shell of ions in water
- Download full text (pdf) of Non-local X-ray intermolecular radiative decay probes solvation shell of ions in water
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The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
Part of Journal of Synchrotron Radiation, p. 1328-1345, 2025
- DOI for The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
- Download full text (pdf) of The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
All publications
Articles in journal
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Interference between One-and Two-Electron Channels in Resonant Inelastic X-Ray Scattering
Part of Physical Review Letters, 2025
- DOI for Interference between One-and Two-Electron Channels in Resonant Inelastic X-Ray Scattering
- Download full text (pdf) of Interference between One-and Two-Electron Channels in Resonant Inelastic X-Ray Scattering
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Elemental asymmetries of spin and electron dynamics in an insulating ferrimagnet
Part of Applied Physics Letters, 2025
-
Emergence of pseudoresonance in high-intensity resonant inelastic x-ray scattering
Part of Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2025
- DOI for Emergence of pseudoresonance in high-intensity resonant inelastic x-ray scattering
- Download full text (pdf) of Emergence of pseudoresonance in high-intensity resonant inelastic x-ray scattering
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Non-local X-ray intermolecular radiative decay probes solvation shell of ions in water
Part of Nature Communications, 2025
- DOI for Non-local X-ray intermolecular radiative decay probes solvation shell of ions in water
- Download full text (pdf) of Non-local X-ray intermolecular radiative decay probes solvation shell of ions in water
-
The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
Part of Journal of Synchrotron Radiation, p. 1328-1345, 2025
- DOI for The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
- Download full text (pdf) of The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
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Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
Part of Physical Review Letters, 2025
- DOI for Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
- Download full text (pdf) of Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
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X-ray-absorption spectrum of O+2
Part of Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2025
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A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
Part of Journal of Synchrotron Radiation, p. 1264-1275, 2024
- DOI for A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
- Download full text (pdf) of A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
-
Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
Part of Science Advances, 2024
- DOI for Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
- Download full text (pdf) of Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
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Atom-specific magnon driven ultrafast spin dynamics in Fe1-xNix alloys
Part of Physical Review B, 2023
- DOI for Atom-specific magnon driven ultrafast spin dynamics in Fe1-xNix alloys
- Download full text (pdf) of Atom-specific magnon driven ultrafast spin dynamics in Fe1-xNix alloys
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Part of Physical Review B, 2023
- DOI for Element-resolved evidence of superdiffusive spin current arising from ultrafast demagnetization process
- Download full text (pdf) of Element-resolved evidence of superdiffusive spin current arising from ultrafast demagnetization process
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Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys
Part of Physical Review B, 2023
- DOI for Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys
- Download full text (pdf) of Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys
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Ultrafast modification of the electronic structure of a correlated insulator
Part of Physical Review Research, 2022
- DOI for Ultrafast modification of the electronic structure of a correlated insulator
- Download full text (pdf) of Ultrafast modification of the electronic structure of a correlated insulator
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Quantum watch and its intrinsic proof of accuracy
Part of Physical Review Research, 2022
- DOI for Quantum watch and its intrinsic proof of accuracy
- Download full text (pdf) of Quantum watch and its intrinsic proof of accuracy
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Part of Physical Chemistry, Chemical Physics - PCCP, p. 17166-17176, 2021
- DOI for Breaking inversion symmetry by protonation: experimental and theoretical NEXAFS study of the diazynium ion, N2H+
- Download full text (pdf) of Breaking inversion symmetry by protonation: experimental and theoretical NEXAFS study of the diazynium ion, N2H+
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Element-Specific Magnetization Dynamics in Co-Pt Alloys Induced by Strong Optical Excitation
Part of The Journal of Physical Chemistry C, p. 11714-11721, 2021
- DOI for Element-Specific Magnetization Dynamics in Co-Pt Alloys Induced by Strong Optical Excitation
- Download full text (pdf) of Element-Specific Magnetization Dynamics in Co-Pt Alloys Induced by Strong Optical Excitation
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Optical and extreme UV studies of spin dynamics in metallic and insulating ferrimagnets
Part of Journal of Applied Physics, 2021
- DOI for Optical and extreme UV studies of spin dynamics in metallic and insulating ferrimagnets
- Download full text (pdf) of Optical and extreme UV studies of spin dynamics in metallic and insulating ferrimagnets
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Ultrafast magnetization dynamics in the half-metallic Heusler alloy Co2FeAl
Part of Physical Review B, 2021
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The carbon and oxygen K-edge NEXAFS spectra of CO+
Part of Physical Chemistry, Chemical Physics - PCCP, p. 16215-16223, 2020
- DOI for The carbon and oxygen K-edge NEXAFS spectra of CO+
- Download full text (pdf) of The carbon and oxygen K-edge NEXAFS spectra of CO+
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Part of Physical Review Research, 2020
- DOI for Analysis of the linear relationship between asymmetry and magnetic moment at the M edge of 3d transition metals
- Download full text (pdf) of Analysis of the linear relationship between asymmetry and magnetic moment at the M edge of 3d transition metals
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Photon-recoil imaging: Expanding the view of nonlinear x-ray physics
Part of Science, p. 1630-1633, 2020
-
Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2020
- DOI for Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
- Download full text (pdf) of Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
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Angular emission distribution of O 1s photoelectrons of uniaxially oriented methanol
Part of Journal of Physics B, 2020
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Part of Journal of Physical Chemistry A, p. 7619-7635, 2019
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Developments and enhancements to the HELIOS pump probe system
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 33-37, 2018
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Part of Review of Scientific Instruments, 2017
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Part of Physical Chemistry, Chemical Physics - PCCP, p. 21921-21929, 2016
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Part of Review of Scientific Instruments, 2015
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Rydberg-Resolved Resonant Inelastic Soft X-Ray Scattering: Dynamics at Core Ionization Thresholds
Part of Physical Review Letters, 2015
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Part of ScienceAsia, p. 290-294, 2014
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Part of Journal of Physical Chemistry B, p. 7119-7127, 2014
- DOI for Surface Behavior of Hydrated Guanidinium and Ammonium Ions: A Comparative Study by Photoelectron Spectroscopy and Molecular Dynamics
- Download full text (pdf) of Surface Behavior of Hydrated Guanidinium and Ammonium Ions: A Comparative Study by Photoelectron Spectroscopy and Molecular Dynamics
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Part of Nuclear Instruments and Methods in Physics Research Section A, p. 84-88, 2014
- DOI for Measuring the temporal coherence of a high harmonic generation setup employing a Fourier transform spectrometer for the VUV/XUV
- Download full text (pdf) of Measuring the temporal coherence of a high harmonic generation setup employing a Fourier transform spectrometer for the VUV/XUV
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High resolution multiphoton spectroscopy by a tunable free-electron-laser light
Part of Physical Review Letters, p. 193201, 2014
- DOI for High resolution multiphoton spectroscopy by a tunable free-electron-laser light
- Download full text (pdf) of High resolution multiphoton spectroscopy by a tunable free-electron-laser light
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Deeper Insight into Depth-Profiling of Aqueous Solutions Using Photoelectron Spectroscopy
Part of The Journal of Physical Chemistry C, p. 29333-29339, 2014
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Part of Physical Review X, 2013
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Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2013
- DOI for Laboratory-frame electron angular distributions: Probing the chemical environment through intramolecular electron scattering
- Download full text (pdf) of Laboratory-frame electron angular distributions: Probing the chemical environment through intramolecular electron scattering
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Part of Review of Scientific Instruments, 2013
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Vibrational scattering anisotropy in O 2 - dynamics beyond the Born-Oppenheimer approximation
Part of New Journal of Physics, p. 113018, 2012
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Vibrational scattering anisotropy in O-2-dynamics beyond the Born-Oppenheimer approximation
Part of New Journal of Physics, p. 113018, 2012
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Part of Journal of Physical Chemistry B, p. 13017-13023, 2012
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The ESCA molecule-Historical remarks and new results
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 191-197, 2012
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Nonstoichiometric Intensities in Core Photoelectron Spectroscopy
Part of Physical Review Letters, p. 193005, 2012
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Part of Atmospheric Chemistry And Physics, p. 12227-12242, 2012
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Part of The Journal of Physical Chemistry Letters, p. 972-976, 2011
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Part of The Journal of Physical Chemistry Letters, p. 972-976, 2011
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Angle-resolved electron spectroscopy of the resonant Auger decay in xenon with meV energy resolution
Part of New Journal of Physics, 2011
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Functionalized nanoparticles in aqueous surroundings probed by X-ray photoelectron spectroscopy
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 375-378, 2011
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The Protonation State of Small Carboxylic Acids at the Water Surface from Photoelectron Spectroscopy
Part of Physical Chemistry, Chemical Physics - PCCP, p. 12261-12267, 2011
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Functionalized nanoparticles in aqueous surroundings probed by X-ray photoelectron spectroscopy
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 375-378, 2011
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Part of Journal of Electron Spectroscopy and Related Phenomena, p. 197-201, 2010
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Part of Journal of Electron Spectroscopy and Related Phenomena, p. 197-201, 2010
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Circularly Polarized X Rays: Another Probe of Ultrafast Molecular Decay Dynamics
Part of Phys. Rev. Lett., 2010
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Angular effects in autoionization of 3 P doubly excited states in He
Part of Journal of Physics: Conference Series, 2009
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Excitation of 1S and 3S Metastable Helium Atoms to Doubly Excited States
Part of Physical Review Letters, p. 153001, 2009
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Angular effects in autoionization of 3 P doubly excited states in He
Part of Journal of Physics: Conference Series, 2009
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Radiative decay spectra of selected doubly excited states in helium
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2008
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Part of Chemical Physics Letters, p. 14-19, 2007
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Photoinduced Formation of N2 Molecules in Ammonium Compounds
Part of Journal of Physical Chemistry A, p. 9662-9669, 2007
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Oxygen K Edge X-ray-Emission-Threshold-Electron Coincidence Spectrum of CO2
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2007
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Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2007
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Part of Chemical Physics Letters, p. 14-19, 2007
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Resonant inelastic soft x-ray scattering at double core excitations in solid LiCl
Part of Physical Review B. Condensed Matter and Materials Physics, 2006
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Part of Physical Review Letters, p. 253002, 2006
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Double excitations of helium in weak static electric fields
Part of Physical Review Letters, 2006
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X-ray yield and selectively excited X-ray emission spectra of atenolol and nadolol.
Part of J Electr Spectr, p. 283-285, 2005
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Part of Physical Review A, 2005
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X-ray-emission-threshold-electron coincidence spectroscopy
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 161-170, 2004
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Resonant inelastic soft X-ray scattering at hollow lithium states in solid LiCl
Part of Physical Review Letters, 2004
Articles, review/survey
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The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
Part of Space Science Reviews, 2025
- DOI for The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
- Download full text (pdf) of The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
Comprehensive doctoral thesis
Conference papers
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Energy dependent relative cross sections in carbon 1s photoionization
Part of 31ST INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC XXXI), 2020
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On the relation between X-ray Photoelectron Spectroscopy and XAFS
Part of 15th International Conference On X-Ray Absorption Fine Structure (XAFS15), 2013
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High Resolution Photon Counting Detection System for Advanced Inelastic X-Ray Scattering Studies
Part of 2006 IEEE Nuclear Science Symposium Conference Record, p. 735-739, 2006
Manuscripts (preprints)
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Magnetic asymmetry around the 3p absorption edge in Fe and Ni
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Ultrafast magnetization dynamics in magnetically frustrated NiFe2O4 ferrimagnet
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Ultrafast dynamics in Fe65Co35 alloys: Effect of Re doping
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Ultrafast magnetization dynamics in half-metallic Co2FeAl Heusler alloy
- Download full text 1 (pdf) of Ultrafast magnetization dynamics in half-metallic Co2FeAl Heusler alloy
- Download full text 2 (pdf) of Ultrafast magnetization dynamics in half-metallic Co2FeAl Heusler alloy