47 citations · 123 across the 10 of their papers we have counts for
13 papers · 1 filter
Correlation Between Dopant Atom Evaporation Field and Measured Site Preference in Atom Probe Tomography
Kasper A. Hunnestad, Constantinos Hatzoglou, Frida H. Danmo +6
Complex oxides possess a wide range of electric, magnetic, and optical properties that can be precisely tuned by chemical doping. The atomic-scale analysis of the property-controll…
Post-synthesis tuning of dielectric constant via ferroelectric domain wall engineering
L. Zhou, L. Puntigam, P. Lunkenheimer +7
A promising mechanism for achieving colossal dielectric constants is to use insulating internal barrier layers, which typically form during synthesis and then remain in the materia…
Non-destructive tomographic nanoscale imaging of ferroelectric domain walls
Jiali He, Manuel Zahn, Ivan N. Ushakov +8
Extraordinary physical properties arise at polar interfaces in oxide materials, including the emergence of two-dimensional electron gases, sheet-superconductivity, and multiferroic…
Imaging and structure analysis of ferroelectric domains, domain walls, and vortices by scanning electron diffraction
Ursula Ludacka, Jiali He, Shuyu Qin +9
Direct electron detectors in scanning transmission electron microscopy give unprecedented possibilities for structure analysis at the nanoscale. In electronic and quantum materials…
Pressure-control of non-ferroelastic ferroelectric domains in ErMnO3
O. W. Sandvik, A. M. Müller, H. W. Ånes +7
Mechanical pressure controls the structural, electric, and magnetic order in solid state systems, allowing to tailor and improve their physical properties. A well-established examp…
Optimizing compositional and atomic-level information of oxides in atom probe tomography
Kasper Hunnestad, Constantinos Hatzoglou, Francois Vurpillot +5
Atom probe tomography (APT) is a 3D analysis technique that offers unique chemical accuracy and sensitivity with sub-nanometer spatial resolution. Recently, there is an increasing…
Quantitative 3D mapping of chemical defects at charged grain boundaries in a ferroelectric oxide
K. A. Hunnestad, J. Schultheiß, A. C. Mathisen +4
Polar discontinuities and structural changes at oxide interfaces can give rise to a large variety of electronic and ionic phenomena. Related effects have been intensively studied i…
The third dimension of ferroelectric domain walls
Erik D. Roede, Konstantin Shapovalov, Thomas J. Moran +7
Ferroelectric domain walls are quasi-2D systems that show great promise for the development of non-volatile memory, memristor technology and electronic components with ultra-small…
Charged ferroelectric domain walls for deterministic a.c. signal control
J. Schultheiß, E. Lysne, L. Puntigam +5
The direct current (d.c.) conductivity and emergent functionalities at ferroelectric domain walls are closely linked to the local polarization charges. Depending on the charge stat…
Controlling local resistance via electric-field induced dislocations
D. M. Evans, D. R. Småbråten, T. S. Holstad +7
Dislocations are one-dimensional (1D) topological line defects where the lattice deviates from the perfect crystal structure. The presence of dislocations transcends condensed matt…
Electrostatic potential mapping at ferroelectric domain walls by low-temperature photoemission electron microscopy
J. Schaab, K. Shapovalov, P. Schoenherr +10
Low-temperature X-ray photoemission electron microscopy (X-PEEM) is used to measure the electric potential at domain walls in improper ferroelectric Er0.99Ca0.01MnO3. By combining…
Electronic bulk and domain wall properties in B-site doped hexagonal ErMnO
T. S. Holstad, D. M. Evans, A. Ruff +8
Acceptor and donor doping is a standard for tailoring semiconductors. More recently, doping was adapted to optimize the behavior at ferroelectric domain walls. In contrast to more…
Imaging and characterization of conducting ferroelectric domain walls by photoemission electron microscopy
J. Schaab, I. P. Krug, F. Nickel +9
High-resolution X-ray photoemission electron microscopy (X-PEEM) is a well-established method for imaging ferroelectric domain structures. Here, we expand the scope of application…