Olle Eriksson
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View article: A configuration interaction approach to solve the Anderson impurity model; applications to elemental Ce
A configuration interaction approach to solve the Anderson impurity model; applications to elemental Ce Open
Accurate calculations of strongly correlated materials remain a formidable challenge in condensed matter physics, particularly due to the computational demand of conventional methods. This paper presents an efficient solver for dynamical m…
View article: Quantitative theory of magnetic properties of elemental praseodymium
Quantitative theory of magnetic properties of elemental praseodymium Open
Elemental Pr metal is unique among rare-earth elements in featuring a localized partially filled 4 f shell without ordered magnetism. Experimental evidence attributes this absence of magnetism to a singlet crystal-field (CF) ground state o…
View article: Laser-induced nucleation of magnetic hopfions
Laser-induced nucleation of magnetic hopfions Open
Hopfions are three-dimensional topological solitons formed by closed loops of vortex strings, typically taking the shape of rings. In magnetic crystals, hopfions have so far been observed only in unusual configurations, where hopfion rings…
View article: Charge-transfer properties and electron dynamics in ferromagnetic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>CoS</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>
Charge-transfer properties and electron dynamics in ferromagnetic Open
We investigated the element-specific electronic structure and charge-carrier dynamics of a single-crystal ferromagnet CoS2 with complementary x-ray spectroscopy techniques. Hard x-ray photoemission (HAXPES) is used to provide crucial infor…
View article: Magnetic exchange and dipolar interactions in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">GdRu</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Si</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>: Three-dimensional magnetism in a layered magnet
Magnetic exchange and dipolar interactions in : Three-dimensional magnetism in a layered magnet Open
GdRu2Si2 has recently drawn significant attention as a centrosymmetric magnet capable of hosting a short-period skyrmion square lattice (SkL) in the absence of Dzyaloshinskii-Moriya interaction (DMI). In this system, Gd atoms are arranged …
View article: A configuration interaction approach to solve the Anderson impurity model; applications to elemental Ce
A configuration interaction approach to solve the Anderson impurity model; applications to elemental Ce Open
Accurate calculations of strongly correlated materials remain a formidable challenge in condensed matter physics, particularly due to the computational demand of conventional methods. This paper presents an efficient solver for dynamical m…
View article: Ultrafast demagnetization dynamics of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mn>4</mml:mn><mml:mrow><mml:mi>f</mml:mi></mml:mrow></mml:math> antiferromagnets
Ultrafast demagnetization dynamics of antiferromagnets Open
We study the ultrafast demagnetization dynamics of LnRh2Si2 (Ln=Pr, Nd, Sm, Gd, Tb, Dy, Ho) antiferromagnets after excitation by a laser pulse, using a combination of density functional theory and atomistic spin and spin-lattice dynamics s…
View article: Light-Induced Bimerons in a Chiral Magnet
Light-Induced Bimerons in a Chiral Magnet Open
Controlled generation of topological spin textures, such as merons and their bound state, the bimerons, is essential for advancing spintronic technologies and elucidating soliton physics in condensed matter. Using in situ Lorentz transmiss…
View article: Bi trimers and self-limiting Bi-Sb interface formation upon Bi deposition on InSb(111)B surfaces
Bi trimers and self-limiting Bi-Sb interface formation upon Bi deposition on InSb(111)B surfaces Open
Investigating metal-semiconductor interfaces is crucial for enabling ultra-thin film growth and tuning the electronic properties. Here we have studied the atomic mechanism of Bi incorporation into the surface of InSb, the III-V semiconduct…
View article: A configuration interaction approach to solve the Anderson impurity model; applications to elemental Ce
A configuration interaction approach to solve the Anderson impurity model; applications to elemental Ce Open
Accurate calculations of strongly correlated materials remain a formidable challenge in condensed matter physics, particularly due to the computational demand of conventional methods. This paper presents an efficient solver for dynamical m…
View article: <i>M</i> Fe <sub>6</sub> <i>X</i> <sub>4</sub> system ( <i>M</i> = Mg, Sc, Zr; <i>X</i> = Al, Si, P, Ga, Ge, In, Sn, Sb) as possible ‘gap’ magnets
<i>M</i> Fe <sub>6</sub> <i>X</i> <sub>4</sub> system ( <i>M</i> = Mg, Sc, Zr; <i>X</i> = Al, Si, P, Ga, Ge, In, Sn, Sb) as possible ‘gap’ magnets Open
LiFe6Ge4, with a theoretically predicted saturation magnetization of 1 T, a magnetocrystalline anisotropy energy of 1.78 MJ/m3 and a Curie temperature of 620 K was suggested to be a promising permanent magn…
View article: Correlations in Magnetic Sub‐Domains as an Unconventional Phase Diagram for van der Waals Ferromagnets (Adv. Sci. 26/2025)
Correlations in Magnetic Sub‐Domains as an Unconventional Phase Diagram for van der Waals Ferromagnets (Adv. Sci. 26/2025) Open
View article: Magnetocaloric properties of ternary Al-Mn-Co alloys
Magnetocaloric properties of ternary Al-Mn-Co alloys Open
We investigate how the Al content in Alx(Mn0.76Co0.24)1-x (x = 0.45, 0.50, 0.55) alloys and the Mn/Co ratio in Al0.50MnyCo0.50-y (y = 0.36, 0.38, 0.40) alloys affect the magnetic properties. Structural and magnetic investigations by experi…
View article: Linked skyrmions in shifted magnetic bilayer
Linked skyrmions in shifted magnetic bilayer Open
We present a shifted magnetic bilayer that exhibits various magnetic phases and magnetic textures with arbitrarily large topological numbers. The proposed system is characterised by a mutually orthogonal Dzyaloshinskii-Moriya interaction (…
View article: Design of thermal hysteresis in nonstoichiometric <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>Fe</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:mi mathvariant="normal">P</mml:mi><mml:mtext>−</mml:mtext><mml:mtext>type</mml:mtext></mml:math> alloys with giant magnetocaloric effect
Design of thermal hysteresis in nonstoichiometric alloys with giant magnetocaloric effect Open
The nonstoichiometric Fe2P-type FeMn(1−x)Vx(P0.5Si0.5)1−x alloys (x=0,0.01, 0.02, and 0.03) have been investigated as potential candidates for magnetic refrigeration near room temperature. The magnetic ordering temperature decreases with i…
View article: Machine learning for improved density functional theory thermodynamics
Machine learning for improved density functional theory thermodynamics Open
View article: Dynamical electronic correlations and chiral magnetism in the van der Waals magnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Fe</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:mi>Ge</mml:mi><mml:msub><mml:mi mathvariant="normal">Te</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>
Dynamical electronic correlations and chiral magnetism in the van der Waals magnet Open
Among the quasi-two-dimensional van der Waals magnetic systems, Fe4GeTe2 makes a profound impact due to its near-room-temperature ferromagnetic behavior and the complex magnetothermal phase diagram exhibiting multiple phase transformations…
View article: Post-stroke fatigue: The role of comorbidities and its impact on quality of life
Post-stroke fatigue: The role of comorbidities and its impact on quality of life Open
Background Post-stroke fatigue (PSF) is a common complication following stroke that affects approximately 50% of stroke survivors. Purpose The purpose of this study was to investigate the role of comorbidities in PSF and the impact of PSF …
View article: Dynamical electronic correlation and chiral magnetism in van der Waals magnet Fe4GeTe2
Dynamical electronic correlation and chiral magnetism in van der Waals magnet Fe4GeTe2 Open
Among the quasi-2D van der Waals magnetic systems, Fe4GeTe2 imprints a profound impact due to its near-room temperature ferromagnetic behaviour and the complex magnetothermal phase diagram exhibiting multiple phase transformations, as obse…
View article: How quantum selection rules influence the magneto-optical effects of driven ultrafast magnetization dynamics
How quantum selection rules influence the magneto-optical effects of driven ultrafast magnetization dynamics Open
Ultrafast magnetization dynamics driven by ultrashort pump lasers is typically explained by changes in the electronic populations and scattering pathways of excited conduction electrons. This conventional approach overlooks the fundamental…
View article: Topological invariants of vortices, merons, skyrmions, and their combinations in continuous and discrete systems
Topological invariants of vortices, merons, skyrmions, and their combinations in continuous and discrete systems Open
Magnetic vortices and skyrmions are typically characterized by distinct topological invariants. This paper presents a unified approach for the topological classification of these textures, encompassing isolated objects and configurations w…
View article: Correlations in Magnetic Sub‐Domains as an Unconventional Phase Diagram for van der Waals Ferromagnets
Correlations in Magnetic Sub‐Domains as an Unconventional Phase Diagram for van der Waals Ferromagnets Open
Traditional magnetic phase diagram represents a transition between the ferromagnetic and paramagnetic states of a material under the influence of varied temperature, magnetic field, and pressure. So far, the ferromagnetic phase has been co…
View article: Complex magnetic exchange, anisotropy and skyrmionic textures in two-dimensional FeXZ$_{2}$ (\textit{X} = Nb, Ta and \textit{Z} = S, Se, Te) ferromagnets
Complex magnetic exchange, anisotropy and skyrmionic textures in two-dimensional FeXZ$_{2}$ (\textit{X} = Nb, Ta and \textit{Z} = S, Se, Te) ferromagnets Open
FeNbTe$_{2}$, long known as a van der Waals metallic system, has recently been resynthesized and shown to exhibit ferromagnetic order. In this study, using first-principles density functional theory (DFT), we aim to provide a deeper insigh…
View article: Driving collective current excitations using light: The two-time $GW$ approach
Driving collective current excitations using light: The two-time $GW$ approach Open
We identify a distinct transverse collective excitation, which we name the "curron", arising from current-current interactions in a driven quantum metal. Unlike plasmons, which involve longitudinal charge oscillations, currons are transver…
View article: Tuning ultrafast demagnetization with ultrashort spin polarized currents in multi-sublattice ferrimagnets
Tuning ultrafast demagnetization with ultrashort spin polarized currents in multi-sublattice ferrimagnets Open
View article: Design of 2D skyrmionic metamaterials through controlled assembly
Design of 2D skyrmionic metamaterials through controlled assembly Open
View article: CombiCTx: Screening diffusion gradients of anti-cancer drug combinations
CombiCTx: Screening diffusion gradients of anti-cancer drug combinations Open
The reduced effectiveness of chemotherapy in many patients highlights the need for novel drug combinations and optimal ratios that target multiple survival mechanisms, which tumors may engage to confer drug resistance. Dynamic conditions w…
View article: Spin-lattice couplings in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>3</mml:mn><mml:mi>d</mml:mi></mml:mrow></mml:math> ferromagnets: Analysis from first principles
Spin-lattice couplings in ferromagnets: Analysis from first principles Open
Magnetoelasticity plays a crucial role in numerous magnetic phenomena, including magnetocalorics, magnon excitation via acoustic waves, and ultrafast demagnetization, or the Einstein–de Haas effect. Despite a long-standing discussion on an…
View article: Charge-state dependent spin-orbit coupling and quantum phase transitions in Ir-Ru oxides
Charge-state dependent spin-orbit coupling and quantum phase transitions in Ir-Ru oxides Open
The competition between kinematic, relativistic and Coulombic interactions in iridium-based oxides has spurred intense experimental and theoretical investigations regarding the electronic structure and magnetism. We argue here that the Iri…
View article: Ultrafast demagnetization dynamics of 4f antiferromagnets
Ultrafast demagnetization dynamics of 4f antiferromagnets Open
We study the ultrafast demagnetization dynamics of LnRh$_2$Si$_2$ (Ln $=$ Pr, Nd, Sm, Gd, Tb, Dy, Ho) antiferromagnets (AFM) after excitation by a laser pulse, using a combination of density functional theory and atomistic spin and spin-la…