178 citations · 646 across the 29 of their papers we have counts for
19 papers · 1 filter
Sub-unit cell engineering of CrVO superlattice thin films
Claudio Bellani, Simon Mellaerts, Wei-Fan Hsu +13
Ordered corundum oxides introduce new prospects in the field of functional oxides thin films, complementing the more widely studied class of ABO perovskites. In this work, we t…
Tunable and Persistent Macroscopic Polarization in Nominally Centrosymmetric Defective Oxides
D. -S. Park, N. Pryds, N. Gauquelin +8
Introducing symmetry breaking in materials enables the emergence of functionalities. This can be microscopically and macroscopically driven by applying external stimuli such as mec…
Coexistence of high electron-mobility, unpaired spins, and superconductivity at high carrier density SrTiO-based interfaces
Thor Hvid-Olsen, Christina H. Christoffersen, Damon J. Carrad +6
The band-structure of SrTiO-based two-dimensional electron gasses (2DEGs), have been found to play a role in features such as the superconducting dome, high-mobility t…
Improving the Accuracy of Temperature Measurement on TEM samples using Plasmon Energy Expansion Thermometry (PEET): Addressing Sample Thickness Effects
Yi-Chieh Yang, Luca Serafin, Nicolas Gauquelin +2
Advances in analytical scanning transmission electron microscopy (STEM) and microelectronic mechanical systems (MEMS) based microheaters have enabled in-situ materials characteriza…
Automated detection and mapping of crystal tilt using thermal diffuse scattering in transmission electron microscopy
Mauricio Cattaneo, Knut Müller-Caspary, Juri Barthel +6
Quantitative interpretation of transmission electron microscopy (TEM) data of crystalline specimens often requires the accurate knowledge of the local crystal orientation. A method…
Imaging the suppression of ferromagnetism in LaMnO by metallic overlayers
Bart Folkers, Thies Jansen, Thijs J. Roskamp +7
LaMnO (LMO) thin films epitaxially grown on SrTiO (STO) usually exhibit ferromagnetism above a critical layer thickness. We report the use of scanning SQUID microscopy (SSM…
High-strain-induced local modification of the electronic properties of VO thin films
Yorick A. Birkhölzer, Kai Sotthewes, Nicolas Gauquelin +8
Vanadium dioxide (VO2) is a popular candidate for electronic and optical switching applications due to its well-known semiconductor-metal transition. Its study is notoriously chall…
Induced Giant Piezoelectricity in Centrosymmetric Oxides
D. -S. Park, M. Hadad, L. M. Rimer +11
Piezoelectrics are materials that linearly deform in response to an applied electric field. As a fundamental prerequisite, piezoelectric material must possess a non centrosymmetric…
Optical versus electron diffraction imaging of Twist-angle in 2D transition metal dichalcogenide bilayer superlattices
S. Psilodimitrakopoulos, A. Orekhov, L. Mouchliadis +7
Atomically thin two-dimensional (2D) materials can be vertically stacked with van der Waals bonds, which enable interlayer coupling. In the particular case of transition metal dich…
Two-dimensional electron systems in perovskite oxide heterostructures: Role of the polarity-induced substitutional defects
Shih-Chieh Lin, Cheng-Tai Kuo, Yu-Cheng Shao +17
The discovery of a two-dimensional electron system (2DES) at the interfaces of perovskite oxides such as LaAlO3 and SrTiO3 has motivated enormous efforts in engineering interfacial…
Stabilization of the perovskite phase in the Y-Bi-O system by using a BaBiO buffer layer
Rosa Luca Bouwmeester, Kit de Hond, Nicolas Gauquelin +3
A topological insulating phase has theoretically been predicted for the thermodynamically unstable perovskite phase of YBiO. Here, it is shown that the crystal structure of t…
Diluted Oxide Interfaces with Tunable Ground States
Yulin Gan, Dennis Valbjørn Christensen, Yu Zhang +14
The metallic interface between two oxide insulators, such as LaAlO3/SrTiO3 (LAO/STO), provides new opportunities for electronics and spintronics. However, due to the presence of mu…
Influence of stoichiometry on interfacial conductance in LaAlO/SrTiO grown by 90 off-axis sputtering
Chunhai Yin, Dileep Krishnan, Nicolas Gauquelin +2
We report on the fabrication of conducting interfaces between LaAlO and SrTiO by 90 off-axis sputtering in an Ar atmosphere. At a growth pressure of 0.04 mbar the inter…
Depth-resolved resonant inelastic x-ray scattering at a superconductor/half-metallic ferromagnet interface through standing-wave excitation
Cheng-Tai Kuo, Shih-Chieh Lin, Giacomo Ghiringhelli +18
We demonstrate that combining standing-wave (SW) excitation with resonant inelastic x-ray scattering (RIXS) can lead to depth resolution and interface sensitivity for studying orbi…
Formation of a conducting LaAlO / SrTiO interface studied by low energy electron reflection during growth
A. J. H. van der Torren, Z. Liao, C. Xu +4
The two-dimensional electron gas occurring between the band insulators SrTiO and LaAlO continues to attract considerable interest, due to the possibility of dynamic control…
Thickness dependent properties in oxide heterostructures driven by structurally induced metal-oxygen hybridization variations
Zhaoliang Liao, Nicolas Gauquelin, Robert J. Green +16
Thickness driven electronic phase transitions are broadly observed in different types of functional perovskite heterostructures. However, uncertainty remains whether these effects…
Epitaxial growth of complex oxides on silicon by enhanced surface diffusion in large area pulsed laser deposition
Rik Groenen, Zhaoliang Liao, Nicolas Gauquelin +11
Homogeneous highly epitaxial LaSrMnO3 (LSMO) thin films have been grown on Yttria-stabilized-Zirconia (YsZ) / CeO2 buffer layers on technological relevant 4" silicon wafers using a…
Real-space mapping of electronic orbitals
Stefan Löffler, Matthieu Bugnet, Nicolas Gauquelin +5
Electronic states are responsible for most material properties, including chemical bonds, electrical and thermal conductivity, as well as optical and magnetic properties. Experimen…
Atomic resolution mapping of phonon excitations in STEM-EELS experiments
R. Egoavil, N. Gauquelin, G. T. Martinez +3
Atomically resolved electron energy-loss spectroscopy experiments are commonplace in modern aberrationcorrected transmission electron microscopes. Energy resolution has also been i…