@article{prodan2026universalitymagneticsusceptibilityconical,

title = {Universality of magnetic susceptibility in the conical state of kagome ferromagnet Fe_{3}Sn_{2}},

author = {L. Prodan and D. M. Evans and L. Puntigam and I. Kézsmárki and V. Tsurkan},

url = {https://doi.org/10.1063/5.0342307},

doi = {10.1063/5.0342307},

year  = {2026},

date = {2026-10-13},

urldate = {2026-10-01},

journal = {Appl. Phys. Lett.},

volume = {129},

pages = {151905},

abstract = {We report universal behavior of the differential magnetic susceptibility (DMS) in the conical phase that mediates the spin-reorientation (SR) transition of the kagome ferromagnet Fe3Sn2. Within the SR temperature range, the DMS isotherms exhibit extremely narrow crossing regions, forming isosbestic points. Using an isosbestic-invariance analysis, we show that the isotherms collapse onto a single temperature-independent curve, revealing quadratic-in-temperature corrections to the susceptibility. Complementary field-dependent magnetic-force-microscopy measurements uncover the evolution of spin textures from stripe-like domains at low fields to isolated bubble-like domains near the isosbestic field (⁠ textasciitilde0.6T), a behavior not previously reported in bulk Fe3Sn2 within the conical state. These findings point to a universal mechanism for the emergence of complex magnetic textures near isosbestic points, driven by the competition between magnetocrystalline anisotropy, dipolar interactions, and external magnetic field.},

note = {datadoi: 10.5281/zenodo.15367272},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{liuInformationTheoreticPrincipleEmergent2026,

title = {Information-Theoretic Principle of Emergent 1-Form Symmetries},

author = {Y. -J. Liu and W. -T. Xu and F. Pollmann and M. Knap},

url = {https://doi.org/10.1103/d6qf-5chk},

doi = {10.1103/d6qf-5chk},

issn = {2691-3399},

year  = {2026},

date = {2026-10-09},

urldate = {2026-10-01},

journal = {PRX Quantum},

volume = {7},

number = {4},

publisher = {American Physical Society (APS)},

note = {datadoi: 10.5281/zenodo.17652054},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{schneiderLinearDichroicSoft2026,

title = {Linear dichroic soft x-ray microscopy of ferroelectric stripe domains in epitaxial K_{0.6}Na_{0.4}NbO_{3}},

author = {M. Schneider and T. A. Butcher and S. Wagner and D. Metternich and C. Klose and E. Malm and R. Battistelli and V. Deinhart and J. Fuchs and S. Wittrock and T. Karaman and K. Puzhekadavil Joy and M. Patra and F. Büttner and S. Wintz and M. Weigand and C. M. Günther and D. Engel and P. Gaal and J. Schwarzkopf and B. Pfau and S. Eisebitt},

url = {https://link.aps.org/doi/10.1103/kcjc-dtj6},

doi = {10.1103/kcjc-dtj6},

year  = {2026},

date = {2026-10-02},

urldate = {2026-10-01},

journal = {Phys. Rev. B},

volume = {114},

number = {23},

pages = {L231401},

publisher = {American Physical Society},

abstract = {Functional properties of ferroelectric thin films are governed by domains that can be engineered by epitaxial strain. Soft x-ray microscopy can image domain structures with elemental and electronic sensitivity, but hitherto its application to strain-stabilized domains has been hindered by the absorption of soft x-rays in epitaxial substrates. Here, it is demonstrated how this limitation can be overcome by locally back-thinning the (110) TbScO3 substrate of epitaxial K0.6⁢Na0.4⁢NbO3 ferroelectric thin films to achieve soft x-ray transparency at the O K-edge around 530 eV. Strain-induced ferroelectric stripe domains with periods down to 44 nm were resolved by scanning transmission x-ray microscopy and coherent diffractive imaging by exploiting the x-ray linear dichroism of hybridized O 2⁢𝑝–Nb 4⁢𝑑 states, providing sensitivity to in-plane polarization components under normal incidence. The results establish soft x-ray microscopy for nanoscale imaging of epitaxial ferroelectric domain structures and open perspectives for time-resolved studies thereof.},

note = {datadoi: 10.5281/zenodo.22250213.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{mangeolleProbingTopologyThin2026,

title = {Probing topology in thin films with quantum Sondheimer oscillations},

author = {L. Mangeolle and J. Knolle},

url = {https://link.aps.org/doi/10.1103/l1gl-xdvv},

doi = {10.1103/l1gl-xdvv},

year  = {2026},

date = {2026-10-01},

journal = {Phys. Rev. B},

volume = {114},

number = {22},

pages = {225108},

publisher = {American Physical Society},

abstract = {Sondheimer oscillations (SO) are magnetoresistance oscillations occurring in thin films due to the commensurability between cyclotron motion and sample thickness, and are traditionally regarded as a purely semiclassical size effect. Here we develop a general quantum theory of SO for thin-film conductors in the quantum limit of a large magnetic field. We show that corrections arising from band topology modify the SO frequency, in contrast to Shubnikov–de Haas oscillations where topological information appears only in the phase. As a consequence, quantum SO provide a direct and robust probe of the full Landau level spectrum. Applying our framework to a minimal model with tunable Berry phase, we demonstrate how topology manifests itself in experimentally accessible magneto-oscillation spectra and discuss damping mechanisms including surface roughness.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{zhangSubstrateTuningStructural2026,

title = {Substrate tuning of the structural and electronic transition in thin flakes of the excitonic insulator candidate Ta_{2}NiSe_{5}},

author = {Y. -S. Zhang and Z. Yang and C. Xiao and M. Isobe and M. Minola and H. Takagi and D. Huang},

url = {https://doi.org/10.1038/s42005-026-02888-x},

doi = {10.1038/s42005-026-02888-x},

year  = {2026},

date = {2026-09-29},

urldate = {2026-09-01},

journal = {Commun. Phys.},

volume = {9},

pages = {309},

abstract = {Ta2NiSe5 continues to draw interest for its Tc = 326 K phase transition, whose dual electronic and structural nature reflects a complex interplay of electron-hole (excitonic) and electron-lattice interactions. The majority of studies that have attempted to decipher the relative importance of these interactions, particularly through charge tuning, have been focused on bulk samples. Here, we utilize an all-dry exfoliation and transfer protocol to isolate ultrathin flakes of Ta2NiSe5 on insulating Al2O3 and conducting Au. Using polarized Raman spectroscopy, we uncover the following substrate dependence: Four layers of Ta2NiSe5 on Al2O3 show a sharp structural and electronic transition that is lowered by roughly 40 K from the bulk Tc. Meanwhile, four layers of Ta2NiSe5 on Au undergo a structural and electronic transition that is much more gradual with respect to temperature and finishes roughly 150 K below the bulk Tc. The pronounced broadening points to an atomic-scale interface effect, wherein electrostatic screening and charge transfer from Au produces a Tc gradient perpendicular to the layers of the flake. We discuss the role of excitonic physics and suggest the possibility for interface engineering to pattern nanoscale junctions in Ta2NiSe5.},

note = {datadoi: 10.5281/zenodo.22107443},

keywords = {},

pubstate = {published},

tppubtype = {article}

}