Dresden 2020 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 17: Poster Session Correlated Electrons 1
TT 17.17: Poster
Montag, 16. März 2020, 15:00–19:00, P2/EG
The present understanding of anisotropic exchange interactions in linarite and other frustrated edge-sharing chain cuprates — •Stefan-Ludwig Drechsler1, Satoshi Nishimoto1,2, Helge Rosner3, Alexander Tsirlin4, Rolf Schumann2, and Ullrich Roessler1 — 1IFW-Dresden, Dresden, Germany — 2TU Dresden, Germany — 3MPI-cPfS, Dresden, Germany — 4Experimental Phys. IV, University of Augsburg, Germany
Based on various recent experimental data /1-3/ and novel DFT calculations we discuss the interplay of symmetric and antisymmetric exchange anisotropies in the context of the rich B−T phase diagram, in particular, with the focus on the high-field region, the asymptotic saturation, and the possibility of sizable multipolar (nematic and higher order) fluctuations. Consequences of the XYZ-anisotropy and the presence of Dzyaloshinskii-Moriya (DM) interactions including DFT estimates are taken into account. In the vicinity of the magnetic ordering a phenonmenological Ginzburg-Landau analysis is applied, too.
[1] L. Heintze et al. Phys. Rev. B 99 , 094436 (2019)
[2] E. Cemal et al. Phys. Rev. Lett. 120, 067203 (2018)
[3] S.K. Gotovko et al. Phys. Rev. B 100, 174412 (2019)