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 Roessler11IFW-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 BT 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)

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