187 citations · 487 across the 16 of their papers we have counts for
16 papers
Optical magnetoelectric effect in the polar honeycomb antiferromagnet Fe2Mo3O8
K. V. Vasin, A. Strinic, F. Schilberth +7
The lack of both time-reversal and spatial inversion symmetry in polar magnets is a prerequisite for the occurrence of optical magnetoelectric effects such as nonreciprocal directi…
Giant natural optical rotation from chiral electromagnons in a collinear antiferromagnet
D. Maluski, M. Langenbach, D. Szaller +8
In NiTeO with a chiral crystal structure, we report on a giant natural optical rotation of the lowest-energy magnon. This polarization rotation, as large as 140 deg/mm, cor…
Confirming the trilinear form of the optical magnetoelectric effect in the polar honeycomb antiferromagnet CoMoO
S. Reschke, D. G. Farkas, A. Strinić +9
Magnetoelectric phenomena are intimately linked to relativistic effects and also require the material to break spatial inversion symmetry and time reversal invariance. Magnetoelect…
Optical, dielectric, and magnetoelectric properties of ferroelectric and antiferroelectric lacunar spinels
K. Geirhos, S. Reschke, S. Ghara +3
Lacunar spinels with a chemical formula of form a populous family of narrow-gap semiconductors, which offer a fertile ground to explore correlation and quantum phenomena,…
Magneto-electric properties and low-energy excitations of multiferroic FeCr2S4
A. Strinic, S. Reschke, K. V. Vasin +5
We report on the low-frequency optical excitations in the multiferroic ground state of polycrystalline FeCr2S4 in the frequency range 0.3-3~THz and their changes upon applying exte…
Structure, phonons, and orbital degrees of freedom in FeMoO
S. Reschke, A. A. Tsirlin, N. Khan +4
We report on the structural and spectroscopic characterization of the multiferroic FeMoO. Synchrotron x-ray and neutron diffraction, as well as thermal expansion measur…
Magnetic and vibronic THz excitations in Zn doped FeMoO
B. Csizi, S. Reschke, A. Strinic +4
We report on optical excitations in the magnetically ordered phases of multiferroic FeZnMoO in the frequency range from 10-130 cm (0.3-3.9 THz). In…
Lattice dynamics and electronic excitations in a large family of lacunar spinels with a breathing pyrochlore lattice structure
S. Reschke, F. Meggle, F. Mayr +6
Reproducing the electronic structure of AMX lacunar spinels with a breathing pyrochlore lattice is a great theoretical challenge due to the interplay of various factors. Th…
Field evolution of low-energy excitations in the hyperhoneycomb magnet -LiIrO
M. Majumder, M. Prinz-Zwick, S. Reschke +8
Li nuclear magnetic resonance (NMR) and terahertz (THz) spectroscopies are used to probe magnetic excitations and their field dependence in the hyperhoneycomb Kitaev magnet …
High-Field Quantum Disordered State in -RuCl3: Spin Flips, Bound States, and a Multi-Particle Continuum
A. Sahasrabudhe, D. A. S. Kaib, S. Reschke +15
Layered -RuCl3 has been discussed as a proximate Kitaev spin liquid compound. Raman and THz spectroscopy of magnetic excitations confirm that the low-temperature antiferromagnet…
THz excitations in α-RuCl3: Majorana fermions, rigid-plane shear and compression modes
S. Reschke, V. Tsurkan, S. -H. Do +4
Spin liquids may host emergent quasiparticles, collective excitations of the spin degrees of freedom with characteristic features of Majorana fermions, which experimentally are det…
Sub-gap optical response across the structural phase transition in van der Waals layered α-RuCl
S. Reschke, F. Mayr, S. Widmann +7
We report magnetic, thermodynamic, thermal expansion, and on detailed optical experiments on the layered compound -RuCl focusing on the THz and sub-gap optical response acro…
Magnetic Excitations and Continuum of a Field-Induced Quantum Spin Liquid in -RuCl
Zhe Wang, S. Reschke, D. Hüvonen +6
We report on terahertz spectroscopy of quantum spin dynamics in -RuCl, a system proximate to the Kitaev honeycomb model, as a function of temperature and magnetic field. An…
Electronic and phonon excitations in α-RuCl
S. Reschke, F. Mayr, Zhe Wang +3
We report on THz, infrared reflectivity and transmission experiments for wave numbers from 10 to 8000 cm ( 1 meV - 1 eV) and for temperatures from 5 to 295 K on the Ki…
Excitations and relaxation dynamics in multiferroic GeV4S8 studied by THz and dielectric spectroscopy
S. Reschke, Zhe Wang, F. Mayr +4
We report on THz time-domain spectroscopy on multiferroic GeV4S8, which undergoes orbital ordering at a Jahn-Teller transition at 30.5 K and exhibits antiferromagnetic order below…
Optical conductivity in multiferroic GaVS and GeVS: Phonons and electronic transitions
S. Reschke, F. Mayr, Zhe Wang +7
We report on optical spectroscopy on the lacunar spinels GaVS and GeVS in the spectral range from 100 to 23000 cm and for temperatures from 5 to 300 K. These…