78 citations · 616 across the 24 of their papers we have counts for
24 papers
Phonon anomalies associated with spin reorientation in the Kagome ferromagnet Fe3Sn2
Ge He, Leander Peis, Ramona Stumberger +6
Polarization- and temperature-dependent Raman data along with theoretical simulations are presented for the Kagome ferromagnet Fe_3Sn_2. Eight out of nine expected phonon modes wer…
Magnetic avalanche of non-oxide conductive domain walls
Somnath Ghara, Korbinian Geirhos, Lukas Kuerten +4
Atomically sharp domain walls (DWs) in ferroelectrics are considered as an ideal platform to realize easy-to-reconfigure nanoelectronic building blocks, created, manipulated and er…
Transport measurements on van der Waals heterostructures under pressure
Bálint Fülöp, Albin Márffy, Endre Tóvári +10
The interlayer coupling, which has a strong influence on the properties of van der Waals heterostructures, strongly depends on the interlayer distance. Although considerable theore…
Strong magneto-optical effects in ACr2O4 A=Fe, Co spinel oxides generated by tetrahedrally coordinated transition metal ions
Vilmos Kocsis, Sándor Bordács, Joachim Deisenhofer +5
Magneto-optical effects have been investigated over the infrared{visible spectral range in ACr2O4 (A = Fe, Co) spinel oxides with non-collinear spin orders in their ground states.…
The Magnetoelastic Distortion of Multiferroic BiFeO in the Canted Antiferromagnetic State
Toomas Rõõm, Johan Viirok, Laur Peedu +17
Using THz spectroscopy, we show that the spin-wave spectrum of multiferroic BiFeO in its high-field canted antiferromagnetic state is well described by a spin model that violat…
Vital role of anisotropy in cubic chiral skyrmion hosts
M. Preißinger, K. Karube, D. Ehlers +10
The impact of magnetic anisotropy on the skyrmion lattice (SkL) state in cubic chiral magnets has been overlooked for long, partly because a semi-quantitative description of the th…
Field and anisotropy driven transformations of spin spirals in cubic skyrmion hosts
Andrey O. Leonov, Catherine Pappas, Istvan Kézsmárki
We discuss distinctive features of spiral states in bulk chiral magnets such as MnSi and CuOSeO that stem from the effect of the cubic magneto-crystalline anisotropy. First…
Stability of Néel-type skyrmion lattice against oblique magnetic fields in GaVS and GaVSe
B. Gross, S. Philipp, K. Geirhos +5
The orientation of Néel-type skyrmions in the lacunar spinels GaVS and GaVSe is tied to the polar axes of their underlying crystal structure through the Dzyaloshins…
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…
Quantum Paraelectricity in the Kitaev Quantum-Spin-Liquid Candidates HLiIrO and DLiIrO
K. Geirhos, P. Lunkenheimer, M. Blankenhorn +7
H3LiIr2O6 is the first honeycomb-lattice system without any signs of long-range magnetic order down to the lowest temperatures, raising the hope for the realization of an ideal Kit…
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 …
Skyrmion robustness in non-centrosymmetric magnets with axial symmetry: The role of anisotropy and tilted magnetic fields
A. O. Leonov, I. Kézsmárki
We investigate the stability of Néel skyrmions against tilted magnetic fields, in polar magnets with uniaxial anisotropy ranging from easy-plane to easy-axis type. We construct the…
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…
Asymmetric isolated skyrmions in polar magnets with easy-plane anisotropy
A. O. Leonov, I. Kézsmárki
We introduce a new class of isolated magnetic skyrmions emerging within tilted ferromagnetic phases of polar magnets with easy-plane anisotropy. The asymmetric magnetic structure o…
Relaxation dynamics of modulated magnetic phases in skyrmion host GaV4S8: an ac magnetic susceptibility study
Ádám Butykai, Sándor Bordács, Lászlo F. Kiss +4
We report on the slow magnetization dynamics observed upon the magnetic phase transitions of GaV4S8, a multiferroic compound featuring a long-ranged cycloidal magnetic order and a…
Polar and magnetic order in GaV4Se8
E. Ruff, A. Butykai, K. Geirhos +6
In the present work, we provide results from specific heat, magnetic susceptibility, dielectric constant, ac conductivity, and electrical polarization measurements performed on the…
Competing Exchange Interactions in the Multiferroic and Ferrimagnetic CaBaCoO
R. S. Fishman, S. Bordács, V. Kocsis +9
Competing exchange interactions can produce complex magnetic states together with spin-induced electric polarizations. With competing interactions on alternating triangular and kag…
Spin excitations in the skymion host Cu2OSeO3
G S Tucker, J S White, J Romhányi +10
We have used inelastic neutron scattering to measure the magnetic excitation spectrum along the high-symmetry directions of the first Brillouin zone of the magnetic skyrmion hostin…
Magnetic Excitations in the Multiferroic Néel-type Skyrmion Host GaVS
Dieter Ehlers, Ioannis Stasinopoulos, Vladimir Tsurkan +6
Broadband microwave spectroscopy has been performed on single-crystalline GaVS, which exhibits a complex magnetic phase diagram including cycloidal, Néel-type skyrmion latt…
Origin of forbidden reflections in multiferroic BaCoGeO by neutron diffraction: Symmetry lowering or Renninger effect?
Andrew Sazonov, Martin Meven, Georg Roth +4
For a symmetry consistent theoretical description of the multiferroic phase of BaCoGeO a precise knowledge of its crystal structure is a prerequisite. In our previous s…
Spin-Induced Polarizations and Non-Reciprocal Directional Dichroism of Multiferroic BiFeO
Randy S. Fishman, Jun Hee Lee, Sándor Bordács +3
A microscopic model for the room-temperature multiferroic BiFeO that includes two Dzyaloshinskii-Moriya interactions and single-ion anisotropy along the ferroelectric polarizat…
Néel-type Skyrmion Lattice with Confined Orientation in the Polar Magnetic Semiconductor GaVS
I. Kézsmárki, S. Bordács, P. Milde +11
Following the early prediction of the skyrmion lattice (SkL) - a periodic array of spin vortices - it has been observed recently in various magnetic crystals mostly with chiral str…