Dresden 2017 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 19: Poster Session: Correlated Electrons 1
TT 19.1: Poster
Montag, 20. März 2017, 15:00–19:00, P2-EG
Bulk and surface properties of SmRh2Si2 single crystals — •Jacintha Banda1, Kristin Kliemt2, Alla Chikina3, Alexander Generalov4, Kurt Kummer5, Monika Güttler3, Victor N. Antonov6, Yuri Kucherenko6, Steffen Danzenbächer3, Christoph Geibel1, Clemens Laubschat3, Denis V. Vyalikh3, 7, 8, 9, Cornelius Krellner2, and Manuel Brando1 — 1MPI CPfS, Dresden, Germany — 2Goethe-University Frankfurt, Frankfurt, Germany — 3Dresden University of Technology, Dresden, Germany — 4MAX IV Laboratory, Lund, Sweden — 5ESRF, Grenoble, France — 6National Academy of Sciences of Ukraine, Kiev, Ukraine — 7Saint Petersburg State University, Saint Petersburg, Russia — 8Donostia International Physics Center, San Sebastian, Spain — 9IKERBASQUE, Bilbao, Spain
We present the properties of SmRh2Si2. Using a modified Bridgman method with indium flux we obtained platelet-shaped SmRh2Si2 single crystals. The magnetic ground state was characterized by magnetization, specific heat and electrical transport measurements. SmRh2Si2 orders antiferromagnetically below TN = 62 K with pronounced anomalies in C(T) and ρ(T). Due to the layered structure, the crystals could be cleaved easily parallel to the Sm-layers leading to well-defined atomically flat surfaces allowing to perform ARPES to investigate the valence of the Sm ions in the bulk and at the surface [1]. We found that, in spite of the antiferromagnetic order, Sm reveals divalent admixtures to the almost trivalent ground state both in the bulk and at the surface. [1] A. Chikina et al., to be published