Regensburg 2013 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 45: Magnetic Coupling and Spin Structures

MA 45.12: Vortrag

Donnerstag, 14. März 2013, 18:00–18:15, H10

ARPES insight into the electronic and magnetic properties of EuRh₂Si₂ — •Alla Chikina¹, Silvia Seiro³, Marc Höppner^1,2, Monika Güttler¹, Steffen Danzenbächer¹, Kurt Kummer^1,4, Yuri Kucherenko⁵, Christoph Geibel³, Ming Shi⁶, Luc Patthey⁶, Sergey Molodtsov⁷, Clemens Laubschat¹, and Denis Vyalikh¹ — ¹Institut für Festkörperphysik, Technische Universität Dresden, D-01062, Germany — ²Max-Planck Institut für Festkörperphysik, Heisenbergstr. 3,D-70569 Stuttgart, Germany — ³Max-Plank-Institut für Chemische Physic fester Stoffe, Nöthnitzer Straß e 40, D-01187 Dresden, Germany — ⁴European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France — ⁵Institute for Metal Physics, National Academy of Sciences of Ukraine, UA-03142 Kiev, Ukraine — ⁶Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland — ⁷European XFEL GmbH, Albert-Einstein Ring 19, D-22671 Hamburg, Germany

Eu-based intermetallics exhibit interesting low-temperature physics, covering magnetism and mixed-valent behaviour due to delicate interplay between localized 4f and conduction electrons. By doing the photoemission (ARPES) experiments and supplementing them by LDA-based slab- and bulk- band structure calculations, we perform the comprehensive analysis of the electronic and magnetic properties of divalent EuRh₂Si₂ system. In the present work we will discuss f-d hybridization phenomena as well as the modification of the electronic structure upon the phase transition from paramagnetic into the antiferromagnetic phase.