Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 26: Spin dynamics and transport

MA 26.5: Vortrag

Mittwoch, 3. April 2019, 10:30–10:45, H37

Scattering of spinon excitations in the 1D Heisenberg model by potentials — •Xenophon Zotos^1,2 and Alexandros Pavlis¹ — ¹Department of Physics, University of Crete,Greece — ²Leibnitz Institute/IFW Dresden, Germany

By a semi-analytical Bethe ansatz method we study the scattering of a spinon, the elementary quantum many-body topological excitation in the 1D Heisenberg model, by a local and a phonon potential. In particular, we contrast the scattering of a spinon to that of a free spinless fermion in the XY model. This study provides insights in the spin transport by one dimensional quantum magnets with embedded interfaces modeled here as prototype local potentials.