112 citations · 336 across the 11 of their papers we have counts for
11 papers
Thermodynamic insights into the intricate magnetic phase diagram of EuAl
William R. Meier, James R. Torres, Raphael P. Hermann +4
The tetragonal intermetallic compound EuAl hosts an exciting variety of low temperature phases. In addition to a charge density wave below 140 K, four ordered magnetic phases…
Influence of hydrogenation on the vibrational density of states of magnetocaloric
Alexandra Terwey, Markus E. Gruner, Werner Keune +14
We report on the impact of magnetoelastic coupling on the magnetocaloric properties of LaFeSiH in terms of the vibrational density of states, which we dete…
Interface-related magnetic and vibrational properties in Fe/MgO heterostructures from nuclear resonant spectroscopy and first-principles calculations
Benedikt Eggert, Markus E. Gruner, Katharina Ollefs +11
We combine Fe Mössbauer spectroscopy and Fe nuclear resonant inelastic x-ray scattering (NRIXS) in nanoscale polycrystalline [bcc-Fe/MgO] multilayers with vari…
Bandwidth controlled insulator-metal transition in BaFeS: A Mössbauer study under pressure
Philipp Materne, Wenli Bi, Jiyong Zhao +6
BaFeS is a quasi one-dimensional Mott insulator that orders antiferromagnetically below 117(5)\,K. The application of pressure induces a transition to a metallic state, and…
Microscopic phase diagram of LaFeAsO single crystals under pressure
Philipp Materne, Wenli Bi, Jiyong Zhao +6
We investigated LaFeAsO single crystals by means of synchrotron Mössbauer spectroscopy under pressures up to 7.5 GPa and down to 13 K and provide a microscopic phase diagram. We fo…
Suppression of the magnetic order in CeFeAsO: non-equivalence of hydrostatic and chemical pressure
Philipp Materne, Wenli Bi, Esen Ercan Alp +12
We present a detailed investigation of the electronic properties of CeFeAsO under chemical (As by P substitution) and hydrostatic pressure by means of in-house and synchrotron Möss…
Distinct pressure evolution of coupled nematic and magnetic order in FeSe
Anna E. Böhmer, Karunakar Kothapalli, Wageesha T. Jayasekara +13
FeSe, despite being the structurally simplest compound in the family of iron-based superconductors, shows an astoundingly rich interplay of physical phenomena including nematicity…
Moment-volume coupling in La(FeSi)
M. E. Gruner, W. Keune, J. Landers +8
We investigate the origin of the volume change and magnetoelastic interaction observed at the magnetic first-order transition in the magnetocaloric system La(FeSi)$_{13…
Impact of lattice dynamics on the phase stability of metamagnetic FeRh: Bulk and thin films
Michael Wolloch, Markus E. Gruner, Werner Keune +20
We present phonon dispersions, element-resolved vibrational density of states (VDOS) and corresponding thermodynamic properties obtained by a combination of density functional theo…
Reentrant valence transition in EuO at high pressures: beyond the bond-valence model
N. M. Souza-Neto, J. Zhao, E. E. Alp +4
The pressure-dependent relation between Eu valence and lattice structure in model compound EuO is studied with synchrotron-based x-ray spectroscopic and diffraction techniques. Con…
Measuring velocity of sound with nuclear resonant inelastic x-ray scattering
Michael Y. Hu, Wolfgang Sturhahn, Thomas S. Toellner +4
Nuclear resonant inelastic x-ray scattering is used to measure the projected partial phonon density of states of materials. A relationship is derived between the low-energy part of…