33 citations · 160 across the 16 of their papers we have counts for
16 papers
Functionalization of -wave altermagnets: spin-splitter effect enabled by surfaces
Sopheak Sorn
We investigate surfaces of a -wave altermagnet(AM) and show that they provide a platform for realizing -wave altermagnetism and the associated spin-splitter functionality. Us…
Projected altermagnetism by symmetry reduction at surfaces and in thin films
Sopheak Sorn, Charanpreet Singh, Lukasz Plucinski +3
Altermagnets are a newly identified class of magnetic materials that combine vanishing net magnetization within the unit cell with spin-split electronic states. Their theoretical d…
The 2026 Skyrmionics Roadmap
Sabri Koraltan, Claas Abert, Manfred Albrecht +64
Magnetic skyrmions and related topological spin textures have emerged as a central topic in condensed-matter physics, combining fundamental significance with potential for transfor…
Activation of anomalous Hall effect and orbital magnetization by domain walls in altermagnets
Sopheak Sorn, Yuriy Mokrousov
Altermagnets are an emerging class of unconventional antiferromagnets, characterized by a Néel ordering that does not break the translation symmetry of the underlying lattice. Depe…
Topological dipoles of quantum skyrmions
Sopheak Sorn, Jörg Schmalian, Markus Garst
Magnetic skyrmions are spatially localized whirls of spin moments in two dimension, featuring a nontrivial topological charge and a well-defined topological charge density. We demo…
Antichiral surface states and Su-Schrieffer-Heeger physics in rutile altermagnets
Sopheak Sorn
We study surface states and domain wall bound states in altermagnets using a rutile-lattice tight-binding model of electrons coupled to a Néel order. We discover that two symmetry-…
Signatures of hidden octupolar order from nonlinear Hall effects
Sopheak Sorn, Adarsh S. Patri
Detecting symmetry-breaking hidden orders with conventional probes has been a long-standing challenge in the field of magnetism. Higher-rank multipolar ordering anisotropic cha…
Topological features in the ferromagnetic Weyl semimetal CeAlSi: Role of domain walls
M. M. Piva, J. C. Souza, V. Brousseau-Couture +8
In the ferromagnetic (FM) Weyl semimetal CeAlSi both space-inversion and time-reversal symmetries are broken. Our quantum oscillation (QO) data indicate that the FM ordering modifi…
Tuning the nontrivial topological properties of the Weyl semimetal CeAlSi
M. M. Piva, J. C. Souza, V. Brousseau-Couture +6
In the ferromagnetic Weyl semimetal CeAlSi both space-inversion and time-reversal symmetries are broken. We use external pressure as an effective tuning parameter and relate three…
Resonant optical topological Hall conductivity from skyrmions
Sopheak Sorn, Luyi Yang, Arun Paramekanti
We study the high frequency Hall conductivity in a two-dimensional (2D) model of conduction electrons coupled to a background magnetic skyrmion texture via an effective Hund's coup…
Nematic order driven by superconducting correlations
Finn Lasse Buessen, Sopheak Sorn, Ivar Martin +1
The interplay of nematicity and superconductivity has been observed in a wide variety of quantum materials. To explore this interplay, we consider a two-dimensional (2D) array of n…
Domain wall skew scattering in ferromagnetic Weyl metals
Sopheak Sorn, Arun Paramekanti
We study transport in the presence of magnetic domain walls (DWs) in a lattice model of ferromagnetic type-I Weyl metals. We compute the diagonal and Hall conductivities in the pre…
Anomalous Kerr Effect in SrRuO Thin Films
F. Michael Bartram, Sopheak Sorn, Zhuolu Li +7
We study the magneto-optical Kerr effect (MOKE) in SrRuO thin films, uncovering wide regimes of wavelength, temperature, and magnetic field where the Kerr rotation is not simpl…
Tunable skyrmion crystals and topological quantum oscillations in magnetic metals
Sopheak Sorn, Stefan Divic, Arun Paramekanti
Skyrmions are spatially localized magnetic swirls which carry a nonzero integer topological charge. We study crystals of skyrmions in a two-dimensional ferromagnet model with chira…
Bilayer Haldane model: From trivial band insulator to fractionalized quantum anomalous Hall insulator
Sopheak Sorn
Motivated by work on the bulk topological proximity effect and the topological bootstrap, we consider two coupled layers of quantum anomalous Hall (QAH) insulators with opposite si…
Fermionic spin liquid analysis of the paramagnetic state in Volborthite
Li Ern Chern, Robert Schaffer, Sopheak Sorn +1
Recently, thermal Hall effect has been observed in the paramagnetic state of Volborthite, which consists of distorted Kagome layers with local moments. Despite the appearan…