162 citations · 1.1k across the 26 of their papers we have counts for
6 papers · 1 filter
Observation of chiral solitons in the quantum spin liquid phase of LiCuVO
Christoph P. Grams, Daniel Brüning, Severin Kopatz +4
Quantum spin liquids represent a magnetic ground state arising in the presence of strong quantum fluctuations that preclude ordering down to zero temperature and leave clear finger…
Charge Transport in a Polar Metal
Jialu Wang, Liangwei Yang, Carl Willem Rischau +6
The fate of electric dipoles inside a Fermi sea is an old issue, yet poorly-explored. SrCaTiO hosts a robust but dilute ferroelectricity in a narrow ($0.002<x<0.0…
Ferroelectric order versus metallicity in SrCaTiO ()
Johannes Engelmayer, Xiao Lin, Fulya Koç +4
We report on a thermal-expansion study of the ferroelectric phase transition in insulating SrCaTiO () and its evolution upon increasing charge-carrier conc…
Large positive magneto-conductivity at microwave frequencies in the compensated topological insulator BiSbTeSe2
Mahasweta Bagchi, Lea Pitz-Paal, Christoph P. Grams +6
The bulk electronic properties of compensated topological insulators are strongly affected by the self-organized formation of charge puddles at low temperature, but their response…
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…
Charge transport in oxygen-deficient EuTiO: the emerging picture of dilute metallicity in quantum-paraelectric perovskite oxides
Johannes Engelmayer, Xiao Lin, Christoph P. Grams +5
We report on a study of charge transport in EuTiO single crystals with carrier density tuned across several orders of magnitude. Comparing this system with other quasi-cubi…