173 citations · 601 across the 20 of their papers we have counts for
20 papers
Structural studies on ReCl (=K, Rb, Cs): absence of Jahn-Teller distortion
A. Bertin, L. Kiefer, V. Pomjakushin +4
KReCl belongs to the antifluorite family and exhibits a sequence of structural transitions above the onset of magnetic order at = 12 K. Because of its 5d3 electronic…
Extended study of crystal structures, optical properties and vibrational spectra of polar 2-aminopyrimidinium hydrogen phosphite and bis(2-aminopyrimidinium) sulfate monohydrate and two 2-aminopyrimidinium hydrogen sulfate polymorphs
Irena Matulkova, Ladislav Bohaty, Petra Becker +6
This study aimed primarily at completing and extending the characterization of the crystallographic, spectroscopic and optical properties of polar, biaxial, optically negative 2-am…
Rotational phase transitions in antifluorite-type osmate and iridate compounds
A. Bertin, L. Kiefer, P. Becker +2
We present temperature-dependent single-crystal diffraction results on seven antifluorite-type compounds with =Os or Ir: KOsCl, OsBr with =K, Rb,…
Multiferroic domain relaxation in (NH4)2[FeCl5(H2O)]
Sebastian Biesenkamp, Karin Schmalzl, Petra Becker +2
The molecular compound (NH4)2[FeCl5(H2O)] is a type-II multiferroic material, in which incommensurate cycloidal order directly induces ferroelectric polarization. The multiferroic…
Local symmetry breaking and low-energy continuum in KReCl
P. Stein, T. C. Koethe, L. Bohaty +3
Using polarization selective spontaneous Raman scattering, we have investigated the 5 transition metal compound KReCl which displays a series of structural phase transit…
Interplay of magnetic order and ferroelasticity in the spin-orbit coupled antiferromagnet KReCl
Alexandre Bertin, Tusharkanti Dey, Daniel Brüning +10
The magnetic and structural phase transitions occurring in KReCl were studied by macroscopic and microscopic techniques. Structural phase transitions associated with rotati…
Domain dynamics in LiCuVO: Evidence for polarized nanoregions
Christoph P. Grams, Severin Kopatz, Daniel Brüning +5
LiCuVO is a model system of a 1D spin-1/2 chain that enters a planar spin-spiral ground state below its Néel temperature of 2.4 K due to competing nearest and next nearest neig…
Resonant inelastic x-ray incarnation of Young's double-slit experiment
A. Revelli, M. Moretti Sala, G. Monaco +12
Young's archetypal double-slit experiment forms the basis for modern diffraction techniques: the elastic scattering of waves yields an interference pattern that captures the real-s…
Anisotropy study of multiferroicity in the pyroxene NaFeGeO
M. Ackermann, L. Andersen, T. Lorenz +2
We present a study of the anisotropy of the dielectric, magnetic and magnetoelastic properties of the multiferroic clinopyroxene NaFeGeO. Pyroelectric currents, dielectric…
Critical slowing down near the multiferroic phase transition in MnWO
D. Niermann, C. P. Grams, P. Becker +3
By using broadband dielectric spectroscopy in the radiofrequency and microwave range we studied the magnetoelectric dynamics in the multiferroic chiral antiferromagnet MnWO. Ab…
Magnetoelectric properties of [FeCl(HO)] with K, Rb, Cs
M. Ackermann, T. Lorenz, P. Becker +1
The compounds [FeCl(HO)] with K, Rb, Cs are identified as new linear magnetoelectric materials. We present a detailed investigation of their linear magnetoelectri…
Thermodynamic properties of the new multiferroic material (NH)[FeCl(HO)]
M. Ackermann, D. Brüning, T. Lorenz +2
(NH)[FeCl(HO)], a member of the family of antiferromagnetic [Fe(HO)] compounds ( = halide ion, = alkali metal or ammonium ion) is classified as…
The spin- XXZ chain system CsCoCl in a transverse magnetic field
O. Breunig, M. Garst, E. Sela +5
Comparing high-resolution specific heat and thermal expansion measurements to exact finite-size diagonalization, we demonstrate that CsCoCl for a magnetic field along the c…
The biaxial nonlinear crystal BiB3O6 as a polarization entangled photon source using non-collinear type-II parametric down-conversion
A. Halevy, E. Megidish, L. Dovrat +3
We describe the full characterization of the biaxial nonlinear crystal BiB3O6 (BiBO) as a polarization entangled photon source using non-collinear type-II parametric down-conversio…
Time-resolved imaging of magnetoelectric domain switching in multiferroic MnWO4
T. Hoffmann, P. Thielen, P. Becker +2
By an electrical-pump--optical-probe technique we show that the electric-field-induced reversal of the magnetic order parameter in multiferroic MnWO occurs on the time scale of…
Local symmetry and magnetic anisotropy in multiferroic MnWO4 and antiferromagnetic CoWO4 studied by soft x-ray absorption spectroscopy
N. Hollmann, Z. Hu, T. Willers +7
Soft x-ray absorption experiments on the transition metal L2,3 edge of multiferroic MnWO4 and antiferromagnetic CoWO4 are presented. The observed linear polarization dependence, an…
Translation domains in multiferroics
D. Meier, N. Leo, T. Jungk +4
Translation domains differing in the phase but not in the orientation of the corresponding order parameter are resolved in two types of multiferroics. Hexagonal (h-) YMnO is a…
Topology and manipulation of multiferroic hybrid domains in MnWO
D. Meier, N. Leo, M. Maringer +4
An investigation of the spatially resolved distribution of domains in the multiferroic phase of MnWO reveals that characteristic features of magnetic and ferroelectric domains…
Control of chiral magnetism in multiferroic MnWO4 through an electric field
T. Finger, D. Senff, K. Schmalzl +5
The chiral components in the magnetic order in multiferroic MnWO4 have been studied by neutron diffraction using spherical polarization analysis as a function of temperature and of…
A New Multiferroic Material: MnWO4
O. Heyer, N. Hollmann, I. Klassen +6
We report the multiferroic behaviour of MnWO, a magnetic oxide with monoclinic crystal structure and spiral long-range magnetic order. Based upon recent theoretical predictions…