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TT: Fachverband Tiefe Temperaturen
TT 94: Correlated Magnetism – Low-Dimensional Systems
TT 94.4: Talk
Friday, March 13, 2026, 10:15–10:30, HSZ/0101
Magnetic vector phases induced by spin-nematicity in high magnetic fields for two anisotropic quasi-1D chain compounds — •Stefan-Ludwig Drechsler1, Lorenz Wolfram1, Rössler Ulrich1, Kuzian Roman2, Klingeler Rüdiger3, Skourskii Yurii4, Zoghlin Eli5, Wolter-Giraud Anja1, Büchner Bernd1, and Nishimoto Satoshi1,6 — 1IFW-Dresden, Germany — 2DIPC, San Sebastian, Spain — 3Heidelberg University, Germ. — 4HLD-EMFL, Dresden, Germ. — 5Oak-Ridge, USA — 6TU-Dresden
We report and analyze pulsed high-field data near quasi saturation
and low-T thermodynamic ones for
Li2CuO2 up to 60 T and
reanalyze
the organic ladder compound
verdazyl β-2,3,5 (V) measured at stationary
fields below 12 T [1] exhibiting both cusps in the magnetic susceptibilities χ at low-T pointing to field
induced magnetic vector phases due to the presence of spin nematicity according to a scenario proposed in [2] making visible
the otherwise difficult to detect tensorial nematic order parameter. The symmetric and/or antisymm.
spin symmetry as well as a subtile interplay of ferromagnetic (FM) and anti-FM couplings are essential
for the appearance of 2-magnon bound states
supported by the XYZ magnetism observed for Li2CuO2 and the
low-symmetry crystalline structure
for V, resp. For the former we report specific heat data
at ambient field pointing possibly to the onset of a Bose condensation below 1 K of 3-magnon bound states as suggested in [3].
[1] H. Yamaguchi et al., J. Phys. Soc. Jpn. 87, 043701 (2018).
[2] A. Smerald et al., Phys. Rev. B 91, 174402 (2015).
[3] C. Agrapidis et al., Phys. Rev. Res.
7, 043051 (2025).
Keywords: spin-nematicity; two-magnon bound states; frustrated magnetism