36 citations · 156 across the 25 of their papers we have counts for
25 papers
Absence of lateral domain wall mobility in Zn1-xMgxO thin films
Jack Eckstein, Kyle P. Kelley, William Prudnick +4
Polarization reversal in ferroelectrics arises from the coupled processes of domain nucleation and subsequent growth, yet the governing mechanisms differ fundamentally between clas…
Electromechanical Hysteresis in Phase Change Material Sb2S3
Jack Kaman, Evan Musterman, Kyle P. Kelley +3
Antimony sulfide is an emerging phase change material for optical and electrical memory and computation elements. It has additionally been reported as a ferroelectric, with recent…
Non-perturbative cathodoluminescence microscopy of beam-sensitive materials
Malcolm Bogroff, Gabriel Cowley, Ariel Nicastro +9
Cathodoluminescence microscopy is now a well-established and powerful tool for probing the photonic properties of nanoscale materials, but in many cases, nanophotonic materials are…
Reversible long-range domain wall motion in an improper ferroelectric
M. Zahn, A. M. Müller, K. P. Kelley +8
Reversible ferroelectric domain wall movements beyond the 10 nm range associated with Rayleigh behavior are usually restricted to specific defect-engineered systems. Here, we demon…
Photoinduced Patterning of Oxygen Vacancies to Promote the Ferroelectric Phase of
Thomas E Beechem, Fernando Vega, Samantha T. Jaszewski +3
Photoinduced reductions in the oxygen vacancy concentration were leveraged to increase the ferroelectric phase fraction of (HZO) thin-films. Modest (…
Closed-Loop Electron-Beam-Induced Spectroscopy and Nanofabrication Around Individual Quantum Emitters
Jawaher Almutlaq, Kyle P. Kelley, Hyeongrak Choi +5
Color centers in diamond play a central role in the development of quantum photonic technologies, and their importance is only expected to grow in the near future. For many quantum…
Ferroelectric domain nucleation and switching pathways in hafnium oxide
Sebastian Calderon, Samantha T. Jaszewski, Kyle P. Kelley +2
Nanoscale ferroelectrics that can be integrated into microelectronic fabrication processes are highly desirable for low-power computing and non-volatile memory devices. However, sc…
The interplay between ferroelectricity and electrochemical reactivity on the surface of binary ferroelectric AlBN
Yongtao Liu, Anton Ievlev, Joseph Casamento +5
Polarization dynamics and domain structure evolution in ferroelectric AlBN are studied using piezoresponse force microscopy and spectroscopies in ambient and cont…
An effective Landau-type model of HfZrO thin film - graphene nanostructure
Anna N. Morozovska, Maksym V. Strikha, Kyle P. Kelley +2
To describe the charge-polarization coupling in the nanostructure formed by a thin HfZrO film with a single-layer graphene as a top electrode, we develop the "effec…
Bending-induced isostructural transitions in ultrathin layers of van der Waals ferrielectrics
Anna N. Morozovska, Eugene A. Eliseev, Yongtao Liu +8
Using Landau-Ginzburg-Devonshire (LGD) phenomenological approach we analyze the bending-induced re-distribution of electric polarization and field, elastic stresses and strains ins…
Disentangling stress and curvature effects in layered 2D ferroelectric CuInP2S6
Yongtao Liu, Anna N. Morozovska, Ayana Ghosh +5
Nanoscale ferroelectric 2D materials offer unique opportunity to investigate curvature and strain effects on materials functionalities. Among these, CuInP2S6 (CIPS) has attracted t…
Large Enhancements in Optical and Piezoelectric Properties in Ferroelectric Zn1-xMgxO Thin Films through Engineering Electronic and Ionic Anharmonicities
Rui Zu, Gyunghyun Ryu, Kyle P. Kelley +10
Multifunctionality as a paradigm requires materials exhibiting multiple superior properties. Integrating second-order optical nonlinearity and large bandgap with piezoelectricity c…
Exploring the microstructural origins of conductivity and hysteresis in metal halide perovskites via active learning driven automated scanning probe microscopy
Yongtao Liu, Jonghee Yang, Rama K. Vasudevan +4
Electronic transport and hysteresis in metal halide perovskites (MHPs) are key to the applications in photovoltaics, light emitting devices, and light and chemical sensors. These p…
Disentangling electronic transport and hysteresis at individual grain boundaries in hybrid perovskites via automated scanning probe microscopy
Yongtao Liu, Jonghee Yang, Benjamin J. Lawrie +4
Underlying the rapidly increasing photovoltaic efficiency and stability of metal halide perovskites (MHPs) is the advance in the understanding of the microstructure of polycrystall…
Mapping the Pathways of Photo-induced Ion Migration in Organic-inorganic Hybrid Halide Perovskites
Taeyong Kim, Soyeon Park, Vasudevan Iyer +7
Organic-inorganic hybrid perovskites (OIHPs) exhibiting exceptional photovoltaic and optoelectronic properties are of fundamental and practical interest, owing to their tunability…
Ferroelectricity in Hafnia Controlled via Surface Electrochemical State
Kyle P. Kelley, Anna N. Morozovska, Eugene A. Eliseev +6
Ferroelectricity in binary oxides including hafnia and zirconia have riveted the attention of the scientific community due to highly unconventional physical mechanisms and the pote…
Probing temperature-induced phase transitions at individual ferroelectric domain walls
Kyle P. Kelley, Sergei V. Kalinin, Eugene Eliseev +4
Ferroelectric domain walls have emerged as one of the most fascinating objects in condensed matter physics due to the broad variability of functional behaviors they exhibit. Howeve…
Learning the right channel in multimodal imaging: automated experiment in Piezoresponse Force Microscopy
Yongtao Liu, Rama K. Vasudevan, Kyle P. Kelley +3
We report the development and experimental implementation of the automated experiment workflows for the identification of the best predictive channel for a phenomenon of interest i…
Automated Experiments of Local Non-linear Behavior in Ferroelectric Materials
Yongtao Liu, Kyle P. Kelley, Rama K. Vasudevan +7
We develop and implement an automated experiment in multimodal imaging to probe structural, chemical, and functional behaviors in complex materials and elucidate the dominant physi…
Exploring Physics of Ferroelectric Domain Walls in Real Time: Deep Learning Enabled Scanning Probe Microscopy
Yongtao Liu, Kyle P. Kelley, Hiroshi Funakubo +2
The functionality of ferroelastic domain walls in ferroelectric materials is explored in real-time via the in-situ implementation of computer vision algorithms in scanning probe mi…
Bayesian Active Learning for Scanning Probe Microscopy: from Gaussian Processes to Hypothesis Learning
Maxim Ziatdinov, Yongtao Liu, Kyle Kelley +2
Recent progress in machine learning methods, and the emerging availability of programmable interfaces for scanning probe microscopes (SPMs), have propelled automated and autonomous…
Autonomous scanning probe microscopy with hypothesis learning: Exploring the physics of domain switching in ferroelectric materials
Yongtao Liu, Anna Morozovska, Eugene Eliseev +4
We report the development and implementation of a hypothesis learning based automated experiment, in which the microscope operating in the autonomous mode identifies the physical l…
Temperature-assisted Piezoresponse Force Microscopy: Probing Local Temperature-Induced Phase Transitions in Ferroics
Anna N. Morozovska, Eugene A. Eliseev, Kyle Kelley +1
Combination of local heating and biasing at the tip-surface junction in temperature-assisted piezoresponse force microscopy (tPFM) opens the pathway for probing local temperature i…
Exploring leakage in dielectric films via automated experiment in scanning probe microscopy
Yongtao Liu, Shelby S. Fields, Takanori Mimura +3
Electronic conduction pathways in dielectric thin films are explored using automated experiments in scanning probe microscopy (SPM). Here, we use large field of view scanning to id…