Condensed matter physics and materials science form a dynamic partnership, exploring how the collective behavior of atoms gives rise to the unique properties of solids and liquids. This field bridges the gap between fundamental quantum mechanics and the practical engineering of everything from flexible electronics to superconductors, turning abstract theories into tangible innovations that shape our daily lives.

At Gist.Science, we process every new preprint in this category directly from arXiv to make these complex discoveries accessible to everyone. Our team generates both plain-language overviews and detailed technical summaries for each paper, ensuring that researchers, students, and curious minds alike can grasp the latest breakthroughs without getting lost in dense jargon.

Below are the latest papers in condensed matter and materials science, organized by their most recent publication dates.

Two New Molecular Nitrogen Phases near Megabar Pressures

Researchers have identified and characterized two new metastable molecular nitrogen phases, tζt\zeta-N2_2 and ξ\xi-N2_2, near megabar pressures using diamond anvil cell experiments, single-crystal X-ray diffraction, and theoretical calculations.

Alexander F. Goncharov, Elena Bykova, Iskander Batyrev, Maxim Bykov, Huawei Chen, William Palfey, Mahmood Mohammad, Stella Chariton, Vitali Prakapenka, Jesse S. Smith2026-04-21🔬 cond-mat.mtrl-sci

Revealing full molecular orientation distributions in organic thin films by nonlinear polarimetry

This paper introduces a method combining multi-harmonic nonlinear polarimetry with the Maximum Entropy Method to reconstruct full molecular orientation distributions in organic thin films without prior assumptions, thereby revealing complex features like asymmetry and bimodality that are invisible to conventional techniques and exposing limitations in current molecular dynamics simulations.

Pierre-Luc Thériault, Emna Azek, Gabriel Juteau, Anagh Mukherjee, Heorhii V. Humeniuk, Zhechang He, Alexandre Malinge, Dmytro F. Perepichka, Lena Simine, Stéphane Kéna-Cohen2026-04-21🔬 physics.optics

Intrinsic grain-size gradients upon grain growth near a free surface

This study reveals that free surfaces induce intrinsic grain-size gradients extending deep into bulk polycrystalline nickel during annealing, a phenomenon driven by elastic relaxation altering stress fields from shear-coupled grain boundary migration rather than solely by curvature flow.

Jing Tang, Runlu Yan, Donglan Zhang, Ronald Schnitzer, Lorenz Romaner, Marlene Kapp, Marco Salvalaglio, Oliver Renk2026-04-21🔬 cond-mat.mtrl-sci

On the complementary roles of anisotropic crack density and anisotropic crack driving force in phase-field modeling of mixed-mode fracture

This study elucidates the distinct and synergistic roles of anisotropic crack density and anisotropic strain energy in phase-field modeling of mixed-mode fracture, demonstrating that while crack density primarily governs the fracture path and resistance, anisotropic strain energy controls the driving force and significantly influences elastic stiffness and peak load in stress-concentration geometries.

Guk Heon Kim, Minseo Kim, Kwangsan Chun, Jaemin Kim2026-04-21🔬 cond-mat.mtrl-sci

UCd11_{11}: A strongly localized 5f3f^3 material

This study combines DFT+DMFT calculations with spectroscopic data to demonstrate that UCd11_{11} is a highly localized 5f3f^3 antiferromagnet, challenging the conventional interpretation that the absence of satellite features in photoemission spectra necessarily indicates itinerant 5ff behavior.

Martin Sundermann, Naoki Ito, Daisuke Takegami, Chun-Fu Chang, Sheng-Huai Chen, Chang-Yang Kuo, Simone G. Altendorf, Andrei Gloskovskii, Hlynur Gretarsson, Eric D. Bauer, Jan Kuneš, Liu Hao Tjeng (…)2026-04-21🔬 cond-mat

Evolution of topological phases in atomically thin WTe2 films

This study combines angle-resolved photoemission spectroscopy and first-principles calculations to reveal that the topological phases of atomically thin WTe2 films evolve non-monotonically with layer thickness, oscillating between topological insulating and metallic states due to interlayer coupling-induced band reconfiguration.

Changcang Qiao, Chen-Chia Hsu, Tao Zhang, Zhiming Sun, Dong Qian, Yang-hao Chan, Peng Chen2026-04-21🔬 cond-mat.mes-hall

Crystal Anisotropy Implications on the Magneto-Optical Properties of van der Waals FePS3

This study demonstrates that the in-plane structural anisotropy of antiferromagnetic FePS3, driven by distorted FeS6 octahedra, fundamentally governs its magneto-optical properties by dictating the polarization behaviors of distinct electronic transitions from the bulk down to the monolayer limit.

Ellenor Geraffy, Kusha Sharma, Shahar Zuri, Faris Horani, Adam K. Budniak, Muhamed Dawod, Yaron Amouyal, Thomas Brumme, Andrea Maricel León, Thomas Heine, Rajesh Kumar, Doron Naveh, Efrat Lifshitz2026-04-21🔬 cond-mat.mtrl-sci

The Origin of Linearly-Polarized Photoluminescence in WS2/WSe2 Moiré superlattices

This study reveals that linearly polarized photoluminescence in WS2/WSe2 moiré superlattices is primarily driven by strain-induced C3 symmetry breaking rather than valley selection rules, establishing strain as a critical parameter for reliable optical control of valley degrees of freedom.

Yuto Urano, Ryo Tamura, Yui Tamogami, Toshikaze Kariyado, Yasumitsu Miyata, Daichi Kozawa, Kenji Watanabe, Takashi Taniguchi, Ryo Kitaura2026-04-21🔬 cond-mat.mtrl-sci

On the Energy Dissipation in the Landau-Lifshitz-Gilbert Equation

This paper systematically analyzes the dependence of ferromagnetic resonance frequency, damping, and quality factor on local energy curvature in ferromagnetic nanomagnets, highlighting how the standard quality factor approximation fails near bifurcation points where the number of metastable energy minima changes.

Kutay Kulbak, Mohamed Iyad Boualem, Charlie Masse, Mariana Delalibera de Toledo, Vasily V. Temnov2026-04-21🔬 cond-mat.mtrl-sci