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- Max Planck SocietyDE154 papers
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26 papers · 1 filter
Entanglement-induced Kondo screening in atomic spin chains
Deung-Jang Choi, Roberto Robles, Shichao Yan +6
Quantum entanglement permeates the complex ground states of correlated electron materials defying single-particle descriptions. Coupled magnetic atoms have potential as model syste…
Imaging ambipolar two-dimensional carriers induced by the spontaneous electric polarization of a polar semiconductor BiTeI
Y. Kohsaka, M. Kanou, H. Takagi +2
Two-dimensional (2D) mobile carriers are a wellspring of quantum phenomena. Among various 2D-carrier systems, such as field effect transistors and heterostructures, polar materials…
Interaction-induced singular Fermi surface in a high-temperature oxypnictide superconductor
A. Charnukha, S. Thirupathaiah, V. B. Zabolotnyy +5
In the family of iron-based superconductors, LaFeAsO-type materials possess the simplest electronic structure due to their pronounced two-dimensionality. And yet they host supercon…
Coherent Modulation of the YBa2Cu3O6+x Atomic Structure by Displacive Stimulated Ionic Raman Scattering
R. Mankowsky, M. Först, T. Loew +3
We discuss the mechanism of coherent phonon generation by Stimulated Ionic Raman Scattering, a process different from conventional excitation with near visible optical pulses. Ioni…
Charge transfer model for the electronic structure of layered ruthenates
Krzysztof Rościszewski, Andrzej M. Oleś
Motivated by the earlier experimental results and \textit{ab initio} studies on the electronic structure of layered ruthenates (SrRuO and CaRuO) we introduce and in…
Direct Evidence for Dominant Bond-directional Interactions in a Honeycomb Lattice Iridate Na2IrO3
Sae Hwan Chun, Jong-Woo Kim, Jungho Kim +15
Heisenberg interactions are ubiquitous in magnetic materials and have been prevailing in modeling and designing quantum magnets. Bond-directional interactions offer a novel alterna…