Ronny Knut
Researcher at Institutionen för fysik och astronomi; Röntgenfysik
- Telephone:
- +46 18 471 36 03
- Mobile phone:
- +46 70 364 52 43
- E-mail:
- Ronny.Knut@physics.uu.se
- Visiting address:
- Ångströmlaboratoriet, Lägerhyddsvägen 1
- Postal address:
- Box 516
751 20 UPPSALA
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Short presentation
Postdoctor in the High Energy Laser Induced Overtone Source (HELIOS) lab. This source generates ultrashort (< 20 fs) pulses of extreme ultraviolet radiation (20 to 70 eV) which are used in a pump-probe setup to study fast dynamic processes in materials. I am mainly interested in magnetodynamics and the study of ultrafast phenomena in magnetic materials.
Publications
Recent publications
- Near-surface electronic structure in strained Ni-ferrite films (2024)
- Element-resolved evidence of superdiffusive spin current arising from ultrafast demagnetization process (2023)
- Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys (2023)
- Observation of coherently coupled cation spin dynamics in an insulating ferrimagnetic oxide (2023)
- Quantum watch and its intrinsic proof of accuracy (2022)
All publications
Articles
- Near-surface electronic structure in strained Ni-ferrite films (2024)
- Element-resolved evidence of superdiffusive spin current arising from ultrafast demagnetization process (2023)
- Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys (2023)
- Observation of coherently coupled cation spin dynamics in an insulating ferrimagnetic oxide (2023)
- Quantum watch and its intrinsic proof of accuracy (2022)
- Element-selective ultrafast magnetization dynamics of hybrid Stoner-Heisenberg magnets (2022)
- Ultrafast modification of the electronic structure of a correlated insulator (2022)
- Experimental confirmation of the delayed Ni demagnetization in FeNi alloy (2022)
- Ultrafast manipulation of the NiO antiferromagnetic order via sub-gap optical excitation (2022)
- Perpendicular and In-Plane Hole Asymmetry in a Strained NiFe2O4 film (2021)
- Optical and extreme UV studies of spin dynamics in metallic and insulating ferrimagnets (2021)
- Ultrafast magnetization dynamics in the half-metallic Heusler alloy Co2FeAl (2021)
- Quantifying Spin-Mixed States in Ferromagnets (2021)
- Element-Specific Magnetization Dynamics in Co-Pt Alloys Induced by Strong Optical Excitation (2021)
- Analysis of the linear relationship between asymmetry and magnetic moment at the M edge of 3d transition metals (2020)
- Investigation of the spectral properties and magnetism of BiFeO3 by dynamical mean-field theory (2018)
- Developments and enhancements to the HELIOS pump probe system (2018)
- A setup for element specific magnetization dynamics using the transverse magneto-optic Kerr effect in the energy range of 30-72 eV (2017)
- Tomographic reconstruction of circularly polarized high-harmonic fields (2016)
- The valence band electronic structure of rhombohedral-like and tetragonal-like BiFeO3 thin films from hard X-ray photoelectron spectroscopy and first-principles theory (2016)
- Non-collinear generation of angularly isolated circularly polarized high harmonics (2015)
- Generation of bright phase-matched circularly-polarized extreme ultraviolet high harmonics (2015)
- Photoinduced reduction of surface states in Fe:ZnO (2015)
- Strong-field ionization with two-color circularly polarized laser fields (2015)
- Role of boron diffusion in CoFeB/MgO magnetic tunnel junctions (2015)
- Reactive ZnO/Ti/ZnO interfaces studied by hard x-ray photoelectron spectroscopy (2014)
- Depth-Dependent Magnetization Profiles of Hybrid Exchange Springs (2014)
- Detection of microwave phase variation in nanometre-scale magnetic heterostructures (2013)
- High energy photoelectron spectroscopy in basic and applied science (2013)
- High energy photoelectron spectroscopy in basic and applied science (2013)
- Interface characterization of Co2MnGe/Rh2CuSn Heusler multilayers (2013)
- Exploring the accessible frequency range of phase-resolved ferromagnetic resonance detected with x-rays (2013)
- Near-Room-Temperature Colossal Magnetodielectricity and Multiglass Properties in Partially Disordered La2NiMnO6 (2012)
- Graphene Formation by Sonochemical Exfoliation of Bromine-intercalated Graphite . Influence of Solvent Properties on Exfoliation Yield and Deposition Outcome (2012)
- Understanding interface properties from high kinetic energy photoelectron spectroscopy and first principles theory (2011)
- Annealing effects on structural and magnetic properties of Co implanted ZnO single crystals (2011)
- Magnetocrystalline anisotropy and uniaxiality of MnAs/GaAs(100) films (2011)
- Atomic-scale chemical fluctuation in LaSrVMoO6, a proposed half-metallic antiferromagnet (2010)
- Magnetic and electronic characterization of highly Co-doped ZnO (2010)
- Investigation of interface properties of Ni/Cu multilayers by high kinetic energy photoelectron spectroscopy (2009)
- Defect Formation In Graphene Nanosheets By Acid Treatment (2008)
- Electronic structure and chemical and magnetic interactions in ZnO doped with Co and Al (2008)
- Electronic structure and chemical and magnetic interactions in ZnO doped with Co and Al (2008)
- Electronic structure of Co doped ZnO (2008)
- Inhomogeneity in Co Doped ZnO Diluted Magnetic Semiconductor (2008)
- Ordering in diluted magnetic semiconductors (2007)
- Ultrafast Spin Dynamics of Ru in Ru/Fe65Co35/Ru heterostructures: Effect of Re doping
- Atom-specific magnon driven ultrafast spin dynamics in Fe1-xNix alloys
- Ultrafast magnetization dynamics in half-metallic Co2FeAl Heusler alloy
- Ultrafast dynamics in Fe65Co35 alloys: Effect of Re doping
- Ultrafast magnetization dynamics in magnetically frustrated NiFe2O4 ferrimagnet
Books
Chapters
Conferences
