2017/06/07 by Wojciech Brzezicki, Mario Cuoco, Filomena Forte +1 · 2 citations
Materials Science · Physics and Astronomy · #Chain (unit) #Chemical and Physical Properties of Materials #Domain (mathematical analysis) #Domain wall (magnetism) #Fermion #Ferromagnetism #Quantum #Quantum and electron transport phenomena #Quantum entanglement #Spin (aerodynamics) #Topological Materials and Phenomena #Topology (electrical circuits) #cond-mat.mtrl-sci #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1007/s10948-017-4416-7
published as Journal of Superconductivity and Novel Magnetism 31, 639 (2018) · 6 pages, 5 figures, submitted
arxiv created 2017/06/07 · openalex created_date 2017/06/15 · openalex publication_date 2017/11/20 · arxiv updated 2018/04/04 · openalex updated_date 2026/08/05
We study the evolution of spin-orbital correlations in an inhomogeneous quantum system with an impurity replacing a doublon by a holon orbital degree of freedom. Spin-orbital entanglement is large when spin correlations are antiferromagnetic, while for a ferromagnetic host we obtain a chain with only orbital interactions. In this regime, the orbital model can be mapped on spinless fermions and we uncover topological phases with zero energy modes at the edge or at the domain between magnetically inequivalent regions.