Dresden 2026 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 57: Correlated Magnetism – Kagome Systems

TT 57.12: Talk

Wednesday, March 11, 2026, 18:00–18:15, CHE/0091

Strain Tuning of the Kagome Metal GdV₆Sn₆ — •Francisco Lieberich^1,2, Ganesh Pokharel³, Stephen Wilson⁴, and Elena Gati^1,2,5 — ¹MPI−CPfS, Dresden, Germany — ²TUD, Dresden, Germany — ³UWG, Georgia, USA — ⁴UCSB, Santa Barbara, USA — ⁵Goethe Universität, Frankfurt, Germany

Kagome metals are a fertile ground for exotic states of matter, driven by the interplay of nontrivial band topology and strong correlation effects [1]. In the RV₆Sn₆ series, alternating rare-earth (R) triangular-lattice and V Kagome layers generate a unique environment for exploring the interaction of correlated topological behavior with magnetic frustration. GdV₆Sn₆, in particular, exhibits strong coupling between Gd local magnetic moments and Kagome-plane itinerant electrons [2], giving rise to a fascinating interplay of commensurate and incommensurate spin modulations under applied magnetic field [3]. In this talk, we discuss the effects of uniaxial pressure, which lifts the inherent lattice frustration, on the thermodynamic properties of GdV₆Sn₆. Using high-resolution elastocaloric effect [4] measurements we establish a rich phase diagram and show that the balance of commensurate and incommensurate spin modulations is highly tunable by uniaxial pressure. These findings highlight the exceptional sensitivity of magnetic Kagome metals to lattice tuning by uniaxial pressure.
[1] Sante et al, arXiv:2511.12731 (2025)
[2] Ishikawa et al, JPSC 90, 124704 (2021)
[3] Porter et al, PRB 108, 035134 (2023)
[4] Ikeda et al, RSI 90, 083902 (2019)

Keywords: Kagome metal; Frustrated magnetism; Strain; Uniaxial pressure; Elastocaloric effect