93 citations · 311 across the 15 of their papers we have counts for
11 papers · 1 filter
Coexistence of insulator-like paramagnon and metallic spin-orbit exciton modes in SrIrO
Eugenio Paris, Wenliang Zhang, Yi Tseng +13
We probe the spectrum of elementary excitations in SrIrO by using heterostructured [(SrIrO)/(SrTiO)] samples to approach the bulk limit. Our resonant inelastic…
Isostructural Metal-Insulator Transition Driven by Dimensional-Crossover in SrIrO3 Heterostructures
Shuai Kong, Lei Li, Zengxing Lu +15
Dimensionality reduction induced metal-insulator transitions in oxide heterostructures are usually coupled with structural and magnetic phase transitions, which complicate the inte…
Strain-engineering of the charge and spin-orbital interactions in Sr2IrO4
Eugenio Paris, Yi Tseng, Ekaterina M. Pärschke +16
In the high spin-orbit coupled Sr2IrO4, the high sensitivity of the ground state to the details of the local lattice structure shows a large potential for the manipulation of the f…
Chemical- and hydrostatic-pressure effects on the Kitaev honeycomb material NaIrO
G. Simutis, N. Barbero, K. Rolfs +10
The low-temperature magnetic properties of \tcr{polycrystalline} NaIrO, a candidate material for the realization of a quantum spin-liquid state, were investigated by means…
Strong exchange anisotropy in YbMgGaO from polarized neutron diffraction
Sándor Tóth, Katharina Rolfs, Andrew R. Wildes +1
We measured the magnetic correlations in the triangular lattice spin-liquid candidate material YbMgGaO via polarized neutron diffraction. The extracted in-plane and out-of-plan…
BaMTiO(M = Ir, Rh): A family of 5\textit{\textcolor{black}{d}}/4\textit{\textcolor{black}{d}}-based, diluted quantum spin liquids
R. Kumar, D. Sheptyakov, P. Khuntia +6
We report the structural and magnetic properties of the 4}\textit{\textcolor{black}{d }}\textcolor{black}{(M = Rh) based and 5}\textit{\textcolor{black}{d }}\textcolor{black}{(M =…
Time-dependent correlations in quantum magnets at finite temperature
B. Fauseweh, F. Groitl, T. Keller +4
In this article we investigate the time dependence of the gap mode of copper nitrate at various temperatures. We combine state-of-the-art theoretical calculations with high precisi…
Electromagnon dispersion probed by inelastic x-ray scattering
Sándor Tóth, Björn Wehinger, Katharina Rolfs +7
Inelastic x-ray scattering with meV energy resolution (IXS) is an ideal tool to measure collective excitations in solids and liquids. In non-resonant scattering condition, the cros…
Anomalous thermal decoherence in a quantum magnet measured with neutron spin-echo spectroscopy
Felix Groitl, Thomas Keller, Katharina Rolfs +2
The effect of temperature dependent asymmetric line broadening is investigated in Cu(NO)2.5DO, a model material for a 1-D bond alternating Heisenberg chain, using…
Novel synthesis method of nonstoichiometric Na2-xIrO3. Crystal structure, transport and magnetic properties
Katharina Rolfs, Ekaterina Pomjakushina, Denis Sheptyakov +1
Transition metal oxides with 4d or 5d metals are of great interest due to the competing interactions, of the Coulomb repulsion and the itineracy of the d-electrons, opening a possi…
Luttinger-Liquid Behavior in the Alternating Spin-Chain System Copper Nitrate
B. Willenberg, H. Ryll, K. Kiefer +8
We determine the phase diagram of copper nitrate Cu(NO)2.5DO in the context of quantum phase transitions and novel states of matter. We establish this compound as…