60 citations · 311 across the 15 of their papers we have counts for
15 papers
Fast non-volatile electric control of antiferromagnetic states
Somnath Ghara, Maximilian Winkler, Korbinian Geirhos +4
Electrical manipulation of antiferromagnetic states, a cornerstone of antiferromagnetic spintronics, is a great challenge, requiring novel material platforms. Here we report the fu…
Coexistence of antiferromagnetism and ferrimagnetism in adjacent honeycomb layers
D. Szaller, L. Prodan, K. Geirhos +12
Antiferromagnetic and ferro/ferrimagnetic orders are typically exclusive in nature, thus, their co-existence in atomic-scale proximity is expected only in heterostructures. Breakin…
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…
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,…
Architecture of nanoscale ferroelectric domains in GaMo4S8
Erik Neuber, Peter Milde, Adam Butykai +10
Local-probe imaging of the ferroelectric domain structure and auxiliary bulk pyroelectric measurements were conducted at low temperatures with the aim to clarify the essential aspe…
Cooperative cluster-Jahn-Teller effect as a possible route to antiferroelectricity
K. Geirhos, J. Langmann, L. Prodan +8
We report the observation of an antipolar phase in cubic GaNbS driven by an unconventional microscopic mechanism, the cooperative Jahn-Teller effect of NbS molecula…
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…
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…
Macroscopic Manifestation of Domain-wall Magnetism and Magnetoelectric Effect in a Néel-type Skyrmion Host
K. Geirhos, B. Gross, B. G. Szigeti +12
We report a magnetic state in GaVSe which emerges exclusively in samples with mesoscale polar domains and not in polar mono-domain crystals. Its onset is accompanied with a…
Squeezing Néel-type Magnetic Modulations by Enhanced Dzyaloshinskii-Moriya interaction of Electrons
Ádám Butykai, Korbinian Geirhos, Dávid Szaller +10
In polar magnets, such as GaVS, GaVSe and VOSeO, modulated magnetic phases namely the cycloidal and the Néel-type skyrmion lattice states were identified ov…
Johari-Goldstein relaxation in glass-electrets
P. Lunkenheimer, F. Humann, D. Reuter +3
We investigate the dielectric response in the glass-electret state of two dipolar glass-forming materials. This unusual polar glassy state of matter is produced when a dipolar liqu…
Orbital-Order Driven Ferroelectricity and Dipolar Relaxation Dynamics in Multiferroic GaMoS
K. Geirhos, S. Krohns, H. Nakamura +4
We present the results of broadband dielectric spectroscopy of GaMoS, a lacunar spinel system that recently was shown to exhibit non-canonical, orbitally-driven ferroelectr…
Johari-Goldstein relaxation far below Tg: Experimental evidence for the Gardner transition in structural glasses?
K. Geirhos, P. Lunkenheimer, A. Loidl
Experimental evidence for the Gardner transition, theoretically predicted to arise deep in the glassy state of matter, is scarce. At this transition, the energy landscape sensed by…
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…
Conductivity enhancement in plastic-crystalline solid-state electrolytes
K. Geirhos, P. Lunkenheimer, M. Michl +2
Finding new ionic conductors that enable significant advancements in the development of energy-storage devices is a challenging goal of current material science. Aside of material…