Electron–Phonon Coupling and Electron–Phonon Scattering in SrVO3
M. Mirjolet, F. Rivadulla, P. Marsik, V. Borisov, R. Valentí, J. Fontcuberta, J. Adv. Sci. 2021, 2004207. https://doi.org/; DOI:doi.org/10.1002/advs.202004207 Abstract The nature of electron-electron and electron-lattice interactions in metallic oxides is revised. The common wisdom is that the strong correlations among electrons determine their properties. Here we argue […]
Optical Plasmon Excitations in Transparent Conducting SrNbO3 and SrVO3 Thin Films
Mathieu Mirjolet, Mikko Kataja, Tommi K. Hakala, Philipp Komissinskiy, Lambert Alff, Gervasi Herranz, Josep Fontcuberta, Adv. Opt. Materials First published: 14 June 2021; DOI:doi.org/10.1002/adom.202100520 Abstract From catalysis and flat panel displays to photovoltaics, transparent and conducting transition metal oxides are gaining momentum toward more sustainable and cost-efficient applications. Here it […]
Stabilization of the Ferroelectric Phase in Epitaxial Hf1–xZrxO2 Enabling Coexistence of Ferroelectric and Enhanced Piezoelectric Properties
Tingfeng Song, Huan Tan, Nico Dix, Rahma Moalla, Jike Lyu, Guillaume Saint-Girons, Romain Bachelet, Florencio Sánchez, and Ignasi Fina ACS Appl. Electron. Mater. 2021, 3, 5, 2106–2113 (2021); DOI:doi.org/10.1021/acsaelm.1c00122 Abstract Systematic studies on polycrystalline Hf1–xZrxO2 films with varying Zr contents show that HfO2 films are paraelectric (monoclinic). If the Zr content is […]
Critical Effect of Bottom Electrode on Ferroelectricity of Epitaxial Hf0.5Zr0.5O2 Thin Films
Saúl Estandía, Jaume Gazquez, Maria Varela, N. Dix, Mengdi Qian, Raul Solanas, Ignasi Fina and Florencio Sanchez J. Mater. Chem. C, 9, 3486 – 3492 (2021); DOI:doi.org/10.1039/D0TC05853J Abstract Epitaxial orthorhombic Hf0.5Zr0.5O2 (HZO) films on La0.67Sr0.33MnO3 (LSMO) electrodes show robust ferroelectricity, with high polarization, endurance and retention. However, no similar results have been […]
Epitaxial Ferroelectric HfO2 Films: Growth, Properties, and Devices
Ignasi Fina* and Florencio Sánchez* ACS Appl. Electron. Mater. 2021, 3, 4, 1530-1549; DOI:doi.org/10.1021/acsaelm.1c00110 Abstract About ten years after ferroelectricity was first reported in doped HfO2 polycrystalline films, there is tremendous interest in this material and ferroelectric oxides are once again in the spotlight of the memories industry. Great efforts are […]
Non-volatile optical switch of resistance in photoferroelectric tunnel junctions
Xiao Long, Huan Tan, Florencio Sánchez, Ignasi Fina, Josep Fontcuberta Nature Communications volume 12, Article number: 382 (2021); DOI:10.1038/s41467-020-20660-9 Abstract In the quest for energy efficient and fast memory elements, optically controlled ferroelectric memories are promising candidates. Here, we show that, by taking advantage of the imprint electric field existing […]
Thermal evolution of ferroelectric behavior in epitaxial Hf0.5Zr0.5O2
J. W. Adkins, I. Fina, F. Sanchez, S. R. Bakaul, and J. T. Abiade Appl. Phys. Lett. 117, 142902 (2020); DOI: 10.1063/5.0015547 Abstract Herein, we report a cryogenic-temperature study on the evolution of the ferroelectric properties of epitaxial Hf0.5Zr0.5O2 thin films on silicon. Wake-up, endurance, and fatigue of these […]
Engineering Polar Oxyitrides: Hexagonal Perovskite BaWON2
Judith Oró‐Solé, Ignasi Fina, Carlos Frontera, Jaume Gàzquez, Clemens Ritter, Marina Cunquero, Pablo Loza‐Alvarez, Sergio Conejeros, Pere Alemany, , Enric Canadell, Josep Fontcuberta, Amparo Fuertes; Angew. Chem. Int. Ed. 2020, 59, 18395–18399; DOI:10.1002/anie.202006519 Abstract In the quest for materials of narrow band gap, oxynitrides are excellent candidates. Aiming at obtaining a […]
Magnetic droplet solitons featured
F. Macià and A. D. Kent Journal of Applied Physics 128, 100901 (2020) DOI: 10.1063/5.0018251 Abstract Magnetic droplet solitons are dynamical magnetic textures that form due to an attractive interaction between spin waves in thin films with perpendicular magnetic anisotropy. Spin currents and the spin torques associated with these currents […]
