Sergey Artyukhin ✉
PI
(Multi)ferroics, magnetoelectric effect, topological defects and their dynamics, noncollinear magnets, Berry phase phenomena.
materials theory • multiferroics • domain walls and switching • noncollinear magnets • topological phenomena • quantum geometry
We develop realistic models for emergent phenomena in quantum materials. We study static properties and dynamics in materals with complex orders, such as noncollinear magnets, multiferroics, ferroelectric domain structures. We closely collaborate with experimentalists to interpret puzzling data.
Team
Ravi Kaushik ✉
Doctoral Student
Magnetic interactions at finite-temperatures, electron-phonon and spin-phonon coupling, first-principles simulations, multiferroics.
Luca Maranzana ✉
Doctoral Student
Quantum metric effects, topological pumping of bimerons, merons, and fast ferrimagnetic domain-wall dynamics.
Margherita Parodi ✉
Doctoral Student
Noncollinear magnets, magnon thermal conductivity, and electric-field-driven domain wall motion in spin spirals.
Pietro Diona ✉
Doctoral Student
relativistic domain wall motion in ferrimagnets and non-uniform materials
Aleksandr Buzdakov ✉
Postdoc
Ultrafast laser-induced spin dynamics, antiferromagnetic writing via magnetoelectric fields, spin-lattice coupling, and nonlinear magnon transport.
Publications
Semiclassical Wave-Packet Dynamics in Phase-Space Geometry: Quantum Metric Effects
arXiv:2603.21262 (2026)
A phase-space treatment of quantum geometry puts real-space and momentum-space effects on equal footing for transport and optical phenomena.
Thermal conductivity in noncollinear magnets
arXiv:2602.03326 (2026)
We develop theory of heat transport in noncollinear magnets. Spin noncollinearity leads to three-magnon processes that reduce thermal conductivity. We uncover the relaxons, relaxation modes in the space of magnon occupations, that govern magnetic thermal conductivity.
Highly controllable switching pathways in multiferroic GdMn_2O_5
arXiv:2602.02939 (2026)
Communications Materials, in press
Electric fields are used to map the energy landscape of GdMn2O5, a material with topological order parameter switching process.
Rocket-like dynamics of ferrimagnetic domain walls in graded materials
arXiv:2601.21068 (2026)
PRB Letter, in press
Composition gradients in ferrimagnets are shown to enable new physical mechanisms for domain wall acceleration, with potential for faster racetrack and THz spintronic devices.
Larkin length as a criterion for antiferromagnetic writing
Research Square preprint (2026)
Observation of relativistic domain wall motion in amorphous ferrimagnets
Nonlocal magnetoelectric switching in spiral multiferroics
Newton 2, 100375 (2026)
Competition between multiferroic and magnetic soliton lattice states in DyFeO3
Finite temperature magnetic interactions from first principles
arXiv:2510.16143 (2025)
We introduce an ab-initio approach to study temperature dependence of exchange interactions, discuss the mechanisms that govern the temperature dependence and find 10% increase in exchange interactions at room temperature in Cr2O3.
Spiral multiferroics as a natural skyrmion racetrack
arXiv:2502.13083 (2025)
Group IV binary carbides with double layer honeycomb lattice structure
Trimerization domain walls and vortices in multiferroic BaCoSiO4
Multiferroic kinks and spin-flop transition in Ni2InSbO6 from first principles
Merons, hedgehogs and magnetoelectric switching in spiral multiferroics
arXiv:2403.11195 (2024)
Microscopic origin of the electric Dzyaloshinskii-Moriya interaction
Topologically protected magnetoelectric switching in a multiferroic
Nature 607 (7917), 81-85 (2022)
Ferroelectricity and topological vortices from molecular ordering in metal-organic frameworks
arXiv:2204.09546 (2022)
Electric field-induced domain wall motion in spin spiral multiferroics
arXiv:2204.09027 (2022)
Dzyaloshinskii-Moriya-like interaction in ferroelectrics and antiferroelectrics
Domain wall-localized phonons in BiFeO3: spectrum and selection rules
Conferences
DPG Spring Meeting 2026 (Dresden)
- Mo, 10:00, MA 4.2: Topological order parameter switching — Sergey Artyukhin
- Mo, 11:30, MA 4.5: Multi-cell unit storage based on a multiferroic — Maksim Ryzhkov, Alexey Shuvaev, Maxim Mostovoy, Andrei Pimenov, Anna Pimenov, and Sergey Artyukhin
- Mo, 11:45, MA 4.6: E-field induced unidirectional motion of domain wall in a ferromagnet and time crystals — Margherita Parodi, Sergey Artyukhin, and Maxim Mostovoy
- Di, 09:45, MA 16.2: Topological pumping of skyrmionic textures in spiral multiferroics — Luca Maranzana, Maxim Mostovoy, Naoto Nagaosa, and Sergey Artyukhin
- Di, 09:45, MA 17.2: Competition Between Multiferroic and Magnetic Soliton Lattice States in DyFeO3 — Nikita Andriushin, Stanislav Nikitin, Oystein Fjellvag, Ekaterina Pomjakushina, Alexandra Turrini, Sergey Artyukhin, Christof Schneider, and Maxim Mostovoy
- Di, 11:45, MA 17.9: Towards topological switching in multiferroics — Alessandro Granero and Sergey Artyukhin
- Mi, 10:00, MA 30.3: Antiferromagnetic Writing by Magneto-electric Field in Cr2O3 — Nikolai Khokhlov, Aleksandr Buzdakov, Timur Gareev, Anatoly Zvezdin, Sergey Artyukhin, and Aleksei Kimel
- Mi, 11:15, MA 27.6: Spin-lattice coupling control of ultrafast order melting in antiferromagnetic insulators — Aleksandr Buzdakov, Ravi Kaushik, Nikolai Khokhlov, Johan Mentink, Sergey Artyukhin, and Aleksei Kimel
- Mi, 12:00, MA 30.10: Rocket-like dynamics of ferrimagnetic domain walls in graded magnets — Pietro Diona, Sergey Artyukhin, and Luca Maranzana
- Mi, 16:30, MA 37.7: Magnetization dynamics of twists in (anti-)ferromagnetic insulators — Patricia Oehrl, Mathew James, Luca Maranzana, Andreas Bauer, Denis Mettus, Christian Pfleiderer, Christian Back, Sergey Artyukhin, Hans Huebl, and Aisha Aqeel
Codes
- LInvariant — Second-principles code based on Landau-theory-like order parameter expansion.
- Finite element code — Ferroelectricity, strains, and domain wall-localized phonons [npj Comput. Mater. 6, 62 (2020)].
- MargDYN — Atomistic spin dynamics code with time-dependent perturbations, angle unrolling, and free energy calculations.
- DFPT exchange from W90 — Exchange interactions from density-functional perturbation theory via Wannier90.
Former Members
- Peng Chen — Associate Professor, Guangdong Technion–Israel Institute of Technology, Shantou, China
- Louis Ponet — Postdoc, EPFL — Bitcoin London
- Francesco Foggetti — Postdoc, Oppeneer group, Uppsala University
- Evgenii Barts — Postdoc, Nagaosa group, RIKEN CEMS, Tokyo, Japan
- Giulia Biffi — Research Scientist, Siemens, Netherlands
- Urko Petralanda — Assistant Professor, University of the Basque Country (UPV/EHU), Bilbao
Theses
- MSc thesis Alessandro Granero (2024)
- MSc thesis Margherita Parodi (October 2022)
- PhD thesis Francesco Foggetti (2021)
- PhD thesis Louis Ponet (2020)
- PhD thesis Sergey Artyukhin (February 2012)