195 citations · 560 across the 16 of their papers we have counts for
17 papers
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…
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…
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…
Phase diagram and spin waves in the frustrated ferro-antiferromagnet SrZnVO(PO4)2
Florian Landolt, Zewu Yan, Severian Gvasaliya +4
Single crystals of the frustrated S=1/2 ferro-antiferromagnetic proximate square lattice material SrZnZnVO(PO) are studied in magnetometric, calorimetric, neutron diffracti…
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…
Contact-free reversible switching of improper ferroelectric domains by electron and ion irradiation
Erik D. Roede, Aleksander B. Mosberg, Donald M. Evans +4
Focused ion beam (FIB) and scanning electron microscopy (SEM) are used to reversibly switch improper ferroelectric domains in the hexagonal manganite ErMnO. Surface charging is…
Insulating improper ferroelectric domain walls as robust barrier layer capacitors
Lukas Puntigam, Jan Schultheiß, Ana Strinic +7
We report the dielectric properties of improper ferroelectric h-ErMnO. From the bulk characterisation we observe a temperature and frequency range with two distinct relaxation-…
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…
Magnetic phase diagram of the linear quantum ferro-antiferromagnet CsCuMoO
D. Flavián, S. Hayashida, L. Huberich +5
A single-crystal sample of the frustrated quasi one-dimensional quantum magnet CsCuMoO is investigated by magnetic and thermodynamic measurements.A combina…
Intrinsic and extrinsic conduction contributions at nominally neutral domain walls in hexagonal manganites
J. Schultheiß, J. Schaab, D. R. Småbråten +5
Conductive and electrostatic atomic force microscopy (cAFM and EFM) are used to investigate the electric conduction at nominally neutral domain walls in hexagonal manganites. The E…
Sign-switching of dimer correlations in SrCu(BO) under hydrostatic pressure
Simon Bettler, Lena Stoppel, Zewu Yan +2
Magnetic and vibrational excitations in SrCu(BO) are studied using Raman spectroscopy at hydrostatic pressures up to 34 kbar and temperatures down to 2.6 K. The frequen…
Electrical half-wave rectification at ferroelectric domain walls
J. Schaab, S. H. Skjærvø, S. Krohns +10
Ferroelectric domain walls represent multifunctional 2D-elements with great potential for novel device paradigms at the nanoscale. Improper ferroelectrics display particularly prom…
Frequency dependent polarisation switching in h-ErMnO
Alexander Ruff, Ziyu Li, Alois Loidl +8
We report an electric-field poling study of the geometric-driven improper ferroelectric h-ErMnO. From a detailed dielectric analysis we deduce the temperature and frequency dep…
Global formation of topological defects in the multiferroic hexagonal manganites
Q. N. Meier, M. Lilienblum, S. M. Griffin +10
The spontaneous transformations associated with symmetry-breaking phase transitions generate domain structures and defects that may be topological in nature. The formation of these…
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…
Upper limits on gravitational wave emission from 78 radio pulsars
The LIGO Scientific Collaboration, B. Abbott, M. Kramer +1
We present upper limits on the gravitational wave emission from 78 radio pulsars based on data from the third and fourth science runs of the LIGO and GEO600 gravitational wave dete…