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cond-mat.mtrl-sci2026

High-Temperature ferromagnetism from site-selective filling in (Fe,Ni)GeTe

Tyler L. Werner, Jonathan T. Reichanadter, Xiang Chen +23

The discovery of high-temperature ferromagnetism in the metallic van der Waals (vdW) system FeGeTe has brought two-dimensional (2D) magnets into technologically relevant te…

cond-mat.mtrl-sci2026★ 2 cited

Breaking symmetry to create a parallel-plate varactor dielectric with unparalleled microwave performance

Florian Bergmann, Matthew R. Barone, Zishen Tian +24

Voltage-tunable capacitors (varactors) are key to microwave circuits. Tunable dielectric varactors outperform competing technologies in almost every relevant metric but usually suf…

cond-mat.mtrl-sci2026

Dynamically suppressed lattice rotations in SrTiO as a basis for photo-induced ferroelectricity

Huaiyu Hugo Wang, Michael Fechner, Giovanni De Vecchi +22

Photo-induced ferroelectricity in the quantum paraelectric SrTiO involves the dynamical interplay between a coherently driven Ti-O stretching vibration and multiple structural…

cond-mat.mtrl-sci2026

All-organic self-separating three-dimensionally nanoarchitected electrochemical energy storage devices

William R. T. Tait, Sriram Murali, Chao-Hua Hsu +6

This work realizes a three-dimensionally (3D) nanoarchitected, all organic, "self-separating" lithium-ion electrochemical energy storage (EES) device that is cycled as a solid-stat…

cond-mat.mtrl-sci2026

Dependence of the Mn sticking coefficient on Ga-rich, N-rich, and Ga/N-flux-free conditions in GaN grown by plasma-assisted molecular beam epitaxy

YongJin Cho, Changkai Yu, Huili Grace Xing +1

This brief report examines the influence of Ga/N flux conditions on Mn incorporation in GaN. Mn-doped GaN layers were grown at 680C by molecular beam epitaxy on a Ga-pola…

cond-mat.mtrl-sci2026

Low-temperature spin dynamics in LAFO thin films: from cubic anisotropy to TLS-limited coherence

Srishti Pal, Guanxiong Qu, Hervé M. Carruzzo +6

We investigate the low-temperature spin dynamics of epitaxial lithium aluminum ferrite (LAFO) thin films using broadband ferromagnetic resonance (FMR) spectroscopy from 0.44 K to 6…

cond-mat.mtrl-sci2026★ 1 cited

Fabrication effects on Niobium oxidation and surface contamination in Niobium-metal bilayers using X-ray photoelectron spectroscopy

Tathagata Banerjee, Maciej W. Olszewski, Valla Fatemi

Superconducting resonators and qubits are limited by dielectric losses from surface oxides. Surface oxides are mitigated through various strategies such as the addition of a metal…

cond-mat.mtrl-sci2026

Above Room Temperature Ferroelectricity in Epitaxially Strained KTaO3

Tobias Schwaigert, Salva Salmani-Rezaie, Sankalpa Hazra +9

Epitaxial strain is a powerful means to engineer emergent phenomena in thin films and heterostructures. Here, we demonstrate that KTaO3, a cubic perovskite in bulk form, can be epi…

cond-mat.mtrl-sci2025★ 3 cited

High Mobility Multiple-Channel AlScN/GaN Heterostructures

Aias Asteris, Thai-Son Nguyen, Chuan F. C. Chang +4

Aluminum scandium nitride (AlScN) is a promising barrier material for gallium nitride (GaN)-based transistors for the next generation of radio-frequency electronic devices. In this…

cond-mat.mtrl-sci2025

Critical Disconnect Between Structural and Electronic Recovery in Amorphous GaAs during Recrystallization

Ellis Rae Kennedy, Adric Jones, Yongqiang Wang +6

Understanding the evolution of structure and functionality through amorphous to crystalline phase transitions is critical for predicting and designing devices for application in ex…

cond-mat.mtrl-sci2025

Scalable and deterministic construction of moiré superlattice in 2D materials using stressor films

Yu-Mi Wu, Sihun Lee, Yufeng Xi +6

Moiré superlattice in two-dimensional (2D) materials provides a powerful platform to engineer emergent electronic states, yet the construction of moiré superlattices remains lab-sc…

cond-mat.mtrl-sci2025★ 1 cited

Colossal Cryogenic Electro-Optic Response Through Metastability in Strained BaTiO Thin Films

Albert Suceava, Sankalpa Hazra, Aiden Ross +14

The search for thin film electro-optic (EO) materials that can retain superior performance under cryogenic conditions has become critical for quantum computing. Barium titanate thi…

cond-mat.mtrl-sci2025★ 2 cited

Active-Learning Inspired Theory-Experiment Loop Approach for Management of Material Defects: Application to Superconducting Qubits

Sarvesh Chaudhari, Cristóbal Méndez, Rushil Choudhary +11

Surface oxides are associated with two-level systems (TLSs) that degrade the performance of niobium-based superconducting quantum computing devices. To address this, we introduce a…

cond-mat.mtrl-sci2025

Melting point depression of charge density wave in 1T-TiSe due to size effects

Saif Siddique, Mehrdad T. Kiani, Omri Lesser +13

Classical nucleation theory predicts size-dependent nucleation and melting due to surface and confinement effects at the nanoscale. In correlated electronic states, observation of…

cond-mat.mtrl-sci2025★ 13 cited

The Rise of Generative AI for Metal-Organic Framework Design and Synthesis

Chenru Duan, Aditya Nandy, Shyam Chand Pal +17

Advances in generative artificial intelligence are transforming how metal-organic frameworks (MOFs) are designed and discovered. This Perspective introduces the shift from laboriou…

cond-mat.mtrl-sci2025★ 8 cited

3D Atomic-Scale Metrology of Strain Relaxation and Roughness in Gate-All-Around (GAA) Transistors via Electron Ptychography

Shake Karapetyan, Steven E. Zeltmann, Glen Wilk +3

To improve transistor density and electronic performance, next-generation semiconductor devices are adopting three-dimensional architectures and feature sizes down to the few-nm re…

cond-mat.mtrl-sci2025★ 1 cited

Mic-hackathon 2024: Hackathon on Machine Learning for Electron and Scanning Probe Microscopy

Utkarsh Pratiush, Austin Houston, Kamyar Barakati +70

Microscopy is a primary source of information on materials structure and functionality at nanometer and atomic scales. The data generated is often well-structured, enriched with me…

cond-mat.mtrl-sci2025★ 14 cited

PtyRAD: A High-performance and Flexible Ptychographic Reconstruction Framework with Automatic Differentiation

Chia-Hao Lee, Steven E. Zeltmann, Dasol Yoon +2

Electron ptychography has recently achieved unprecedented resolution, offering valuable insights across diverse material systems, including in three dimensions. However, high-quali…

cond-mat.mtrl-sci2025★ 3 cited

Quantitative approaches for multi-scale structural analysis with atomic resolution electron microscopy

Noah Schnitzer, Lopa Bhatt, Ismail El Baggari +4

Atomic-resolution imaging with scanning transmission electron microscopy is a powerful tool for characterizing the nanoscale structure of materials, in particular features such as…

cond-mat.mtrl-sci2025★ 6 cited

Large asymmetric anomalous Nernst effect in the antiferromagnet SrIrSnO

Dongliang Gong, Junyi Yang, Shu Zhang +10

A large anomalous Nernst effect is essential for thermoelectric energy harvesting in the transverse geometry without external magnetic field. It is often connected with anomalous H…

cond-mat.mtrl-sci2025

The effect of boron incorporation on leakage and wake-up in ferroelectric Al_{1-x}Sc_xN

Maike Gremmel, Chandrashekhar Prakash Savant, Debaditya Bhattacharya +3

This study explores the influence of boron incorporation on the structural and electrical properties of ferroelectric Aluminum Scandium Nitride (Al_{1-x}Sc_xN ) thin films, focusin…

cond-mat.mtrl-sci2025

Improper Ferroelectricity at the Monolayer Limit

Yilin Evan Li, Harikrishnan KP, Haidong Lu +20

Ultrathin ferroelectric films with out-of-plane polarization and high Curie temperatures are key to miniaturizing electronic devices. Most ferroelectrics employed in devices are pr…

cond-mat.mtrl-sci2024★ 31 cited

Lattice-Matched Multiple Channel AlScN/GaN Heterostructures

Thai-Son Nguyen, Naomi Pieczulewsi, Chandrashekhar Savant +6

AlScN is a new wide bandgap, high-k, ferroelectric material for RF, memory, and power applications. Successful integration of high quality AlScN with GaN in epitaxial layer stacks…

cond-mat.mtrl-sci2024★ 12 cited

Phase-Separated Charge Order and Twinning Across Length Scales in CsVSb

Jayden Plumb, Andrea Capa Salinas, Krishnanand Mallayya +9

We present X-ray scattering studies resolving structural twinning and phase separation in the charge density wave (CDW) state of the kagome superconductor CsVSb. The three-…