Université Paris-Saclay

cond-mat.mtrl-sci2026★ 1 cited

Reversible Magneto-ionic Modification of Metallic Magnetic Thin Films

Md Golam Hafiz, Hari Babu Vasili, Philippa Shepley +12

Magnetic multilayers with structural inversion asymmetry, perpendicular magnetic anisotropy (PMA), and large Dzyaloshinskii-Moriya interaction (DMI) are widely studied for magnetic…

Orbital and Spin Edelstein Effects in KTaO $_{3}$ (110) Two-Dimensional Electron Gases

Hugo Witt, Aravind Raji, Srijani Mallik +16

The orbital Edelstein effect converts an electric field into a non-equilibrium orbital polarization, opening new opportunities for orbitronics. Although signatures of the orbital E…

Consistent transition model for Bi0.5Na0.5TiO3 from temperature-dependent structural and electrical properties

Thomas Fourgassie, Omar Ibder, Cosme Milesi-Brault +5

BNT based solid solutions are promising parent materials for lead free dielectric capacitors, thanks to their high recoverable energy densities and breakdown strengths. However, th…

Epitaxial Growth and Electronic Properties of QuasiFreeStanding Rhombohedral WSe2 Bilayers on Cubic W110

Niels Chapuis, Meryem Bouaziz, Eva Desgue +6

Rhombohedral-stacked transition metal dichalcogenides (TMDs) break inversion symmetry between adjacent layers, giving rise to an intrinsic out-of-plane ferroelectric polarization.C…

3D tomographic imaging of skyrmionic cocoons using HERALDO

Jhon J. Chiliquinga-Jacome, Matthieu Grelier, Riccardo Battistelli +11

Uncovering the rich and intricate characteristics of three-dimensional (3D) magnetic textures is essential for functional materials such as magnetic multilayers, where the delicate…

Optimizing spin-based terahertz emission from magnetic heterostructures

Francesco Foggetti, Francesco Cosco, Peter M. Oppeneer +4

Terahertz radiation pulses can be generated efficiently through femtosecond laser excitation of a ferromagnetic/nonmagnetic heterostructure, wherein an ultrafast laser-induced spin…

On the origin of the unusual strain morphologies and polar Moiré patterns in twisted ferroelectrics

Sergey Prosandeev, Charles Paillard, Laurent Bellaiche

Density functional theory calculations are conducted to understand and reveal the origin of the complex shear strain morphology and of the polar Moiré topological pattern recently…

Low-temperature behavior of density-functional theory for metals based on density-functional perturbation theory and Sommerfeld expansion

Xavier Gonze, Christian Tantardini, Antoine Levitt

The temperature dependence of most solid-state properties is dominated by lattice vibrations, but metals display notable purely electronic effects at low temperature, such as the l…

Exciton radiative lifetimes in hexagonal diamond Ge and Si $_{x}$ Ge $_{1 - x}$ alloys

Michele Re Fiorentin, Michele Amato, Maurizia Palummo

Recent reports of strong room-temperature photoluminescence in hexagonal diamond (2H) germanium stand in marked contrast to theoretical predictions of very weak band-edge optical t…

Valence Modifications in Hygroscopic VI3 Degraded Crystals via Soft X-Ray Synchrotron Radiation

A. De Vita, V. Polewczyk, G. Panaccione +1

Among van der Waals crystals, transition metal trihalide VI3 has driven attention for its magnetic and orbital properties. However, its chemical instability under ambient condition…

Spin-wave emission with current-controlled frequency by a PMA-based spin-Hall oscillator

Moritz Bechberger, David Breitbach, Abbas Koujok +4

Spin-torque and spin-Hall oscillators (SHOs) have emerged as promising candidates for building blocks in neuromorphic computing due to their ability to synchronize mutually, a proc…

cond-mat.mtrl-sci2025★ 3 cited

Characteristic ferroelectric domains and their dynamic behavior in ordered Pb(Sc $_{1/2}$ Nb $_{1/2}$ )O $_{3}$

Hiroshi Nakajima, Satoshi Hiroi, Hirofumi Tsukasaki +5

Pb-based perovskites with multiple cations are fascinating materials showing various phenomena such as high piezoelectric, electromechanical, and relaxor properties. While chemical…

Cathodoluminescence, light injection and EELS in STEM: From comparative to coincidence experiments

Luiz H. G. Tizei, Yves Auad, Florian Castioni +1

Electron spectroscopy implemented in electron microscopes provides high spatial resolution, down to the atomic scale, of the chemical, electronic, vibrational and optical propertie…

Single photon emitters in hBN: Limitations of atomic resolution imaging and potential sources of error

David Lamprecht, Shrirang Chokappa, Alissa M. Freilinger +9

There is a growing interest in identifying the origin of single-photon emission in hexagonal boron nitride (hBN), with proposed candidates including boron and nitrogen vacancies as…

Time-resolved observation of magnon splitting into vortex gyration and Floquet spin waves

T. Devolder, R. Lopes Seeger, C. Heins +9

Forced excitations at frequencies in the range of the first order azimuthal spin waves of a magnetic disk in the vortex state are known to scatter into the vortex gyration mode, th…

Challenges in predicting positron annihilation lifetimes in lead halide perovskites: correlation functionals and polymorphism

Kajal Madaan, Guido Roma, Jasurbek Gulomov +3

Halide perovskites have emerged in the last decade as a new important class of semiconductors for a variety of optoelectronic applications. A lot of previous studies were thus devo…

Electro-optic effects in some sliding ferroelectrics

Xueqing Wan, Zhenlong Zhang, Charles Paillard +4

Sliding ferroelectrics, which exhibit out-of-plane polarization arising from specific stacking rather than conventional ionic displacements, are new types of ferroelectrics whose u…

Observation of hexagonal close-packed water ice at conditions in ice giant planetary interiors

Alexis Forestier, Gunnar Weck, Sandra Ninet +4

Using synchrotron x-ray diffraction in laser-heated diamond anvil cells, we report the observation of an hexagonal close-packed (hcp) phase of water ice at high pressure and temper…

DFT-informed Design of Radiation-Resistant Dilute Ternary Cu Alloys

Vaibhav Vasudevan, Thomas Schuler, Pascal Bellon +1

This research establishes a systematic, high-throughput computational framework for designing radiation-resistant, dilute ternary copper-based alloys by addition of solutes that bi…

Comparative study of terbium tellurides Tb2Te5 and TbTe3

I. Shamova, V. Popova, D. Chareev +10

Two terbium tellurides, TbTe3 and Tb2Te5, were studied by means of thermodynamics, ultrafast pump-probe spectroscopy and torque magnetometry. While crystal structure and some physi…

Selective band engineering of Bi/Si(111) by boron segregation

E. Barre, J. Villalobos-Castro, T. Pierron +4

Atomically thin layers of metals deposited on semiconductors display a variety of physical properties such as superconductivity, charge density waves, topological phases, strong sp…