204 citations · 2.3k across the 47 of their papers we have counts for
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Nearest-neighbor Kitaev exchange blocked by charge order in electron doped -RuCl
A. Koitzsch, C. Habenicht, E. Mueller +9
A quantum spin-liquid might be realized in -RuCl, a honeycomb-lattice magnetic material with substantial spin-orbit coupling. Moreover, -RuCl is a Mott insulator,…
Low temperature enhancement of ferromagnetic Kitaev correlations in α-RuCl3
Andreas Koitzsch, Eric Mueller, Martin Knupfer +7
Kitaev-type interactions between neighbouring magnetic moments emerge in the honeycomb material -RuCl3. It is debated however whether these Kitaev interactions are ferromagnetic…
J description of the honeycomb Mott insulator -RuCl
A. Koitzsch, C. Habenicht, E. Mueller +7
Novel ground states might be realized in honeycomb lattices with strong spin-orbit coupling. Here we study the electronic structure of -RuCl, in which the Ru ions are in a d…
Observation of strontium segregation in LaAlO/SrTiO and NdGaO/SrTiO oxide heterostructures by X-ray photoemission spectroscopy
Uwe Treske, Nadine Heming, Stefan Krause +6
LaAlO and NdGaO thin films of different thickness have been grown by pulsed laser deposition on TiO-terminated SrTiO single crystals and investigated by soft…
Investigation of the In-Gap Electronic Structure of LaAlO3 - SrTiO3 Heterointerfaces by Soft X-ray Spectroscopy
A. Koitzsch, J. Ocker, M. Knupfer +4
We investigated \LAO\ - \STO\ heterointerfaces grown either in oxygen rich or poor atmosphere by soft x-ray spectroscopy. Resonant photoemission across the Ti L absorption…
Electronic structure and nesting-driven enhancement of the RKKY interaction at the magnetic ordering propagation vector in Gd2PdSi3 and Tb2PdSi3
D. S. Inosov, D. V. Evtushinsky, A. Koitzsch +12
We present first-time measurements of the Fermi surface and low-energy electronic structure of intermetallic compounds Gd2PdSi3 and Tb2PdSi3 by means of angle-resolved photoelectro…
Anisotropic quasiparticle renormalization in Na0.73CoO2: role of inter-orbital interactions and magnetic correlations
J. Geck, S. V. Borisenko, H. Berger +8
We report an angular resolved photoemission study of Na0.73CoO2 where it is found that the renormalization of the quasiparticle (QP) dispersion changes dramatically upon a rotation…
Self-consistent self-energy analysis of photoemission data
A. A. Kordyuk, S. V. Borisenko, A. Koitzsch +3
Here we present the details of a self-consistent procedure of the photoemission data analysis within the self-energy approach introduced in Ref.1 (cond-mat/0405696). We derive the…
Bare electron dispersion from photoemission experiments
A. A. Kordyuk, S. V. Borisenko, A. Koitzsch +3
Performing an in-depth analysis of the photoemission spectra along the nodal direction of the high temperature superconductor Bi-2212 we have developed a procedure to determine the…
Origin of the shadow Fermi surface in Bi-based cuprates
A. Koitzsch, S. V. Borisenko, A. A. Kordyuk +11
We used angle-resolved photoemission spectroscopy to study the shadow Fermi surface in one layer Bi2Sr1.6La0.4CuO6+delta and two layer (Bi,Pb)2Sr2CaCu2O8+delta. We find the shadow…
Low-energy excitations around (π/2, π/2) points in the pseudogap phase of Nd_1.85Ce_0.15CuO_4
A. Koitzsch, G. Blumberg, A. Gozar +3
Polarized electronic Raman scattering from the NCCO superconductor at optimal electron doping (T_c=22 K) reveals the formation of an anisotropic pseudogap below a characteristic te…
Reply to Comment on:"Nonmonotonic d_{x^2-y^2} Superconducting Order Parameter in Nd_{2-x}Ce_xCuO_4"
G. Blumberg, A. Koitzsch, A. Gozar +4
We confirm that all the results of scanning SQUID, tunneling, ARPES, penetration depth and Raman experiments are consistent with a nonmonotonic d_{x^2-y^2} superconducting order pa…
Antiferromagnetism in CaCuTiO studied by magnetic Raman spectroscopy
A. Koitzsch, G. Blumberg, A. Gozar +4
For CaCuTiO -- an insulator that exhibits a giant dielectric response above 100 K -- Cu antiferromagnetic spin ordering has been investigated by magnetic…