Berlin 2018 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 72: Poster Session: Correlated Electrons

TT 72.97: Poster

Mittwoch, 14. März 2018, 15:00–19:00, Poster B

Multiferroicity in Ni₃TeO₆ and PbNi₆Mn₂Te₃O₁₈ - a comparative Raman study — •Florian Büscher¹, Dirk Wulferding^1,2, Peter Lemmens^1,2, Raman Sankar³, and Fang-Cheng Chou³ — ¹IPKM, TU-BS, Braunschweig, Germany — ²LENA, TU-BS, Braunschweig, Germany — ³NTU, Taipei, Taiwan

We report a comparative Raman study on the layered, 2D multiferroic compounds Ni₃TeO₆ and PbNi₆Mn₂Te₃O₁₈. The emergence of 2-magnon scattering enables a characterization of their magnetic subsystems. Phonon anomalies below the magnetic ordering temperatures evidence a strong coupling between lattice and spin degrees of freedom in both systems. Work supported by the Quantum- and Nanometrology initiative "QUANOMET" within Project NL-4 and NTH School "Contacts in Nanosystems".