Showing 2026 · cond-mat.mtrl-sciShow all

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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…