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Coherent Order Parameter Oscillations in the Ground State of the Excitonic Insulator Ta2NiSe5
Daniel Werdehausen, Tomohiro Takayama, Marc Höppner +6
The excitonic insulator is an intriguing electronic phase of quasi-condensed excitons. A prominent candidate is the small bandgap semiconductor Ta2NiSe5, in which excitons are beli…
Model analysis of magnetic susceptibility of SrIrO - 2D = 1/2 Heisenberg system with competing interlayer couplings
Tomohiro Takayama, Akiyo Matsumoto, George Jackeli +1
We report the analysis of magnetic susceptibility () of SrIrO single crystal in the paramagnetic phase. We formulate the theoretical susceptibility based on isotropic…
Optical anisotropy of the Jeff = 1/2 Mott insulator Sr2IrO4
D. Pröpper, A. N. Yaresko, M. Höppner +7
We report the complex dielectric function along and perpendicular to the IrO2 planes in the layered perovskite Sr2IrO4 determined by spectroscopic ellipsometry in the spectral rang…