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TT: Fachverband Tiefe Temperaturen

TT 50: Quantum-Critical Phenomena I

TT 50.3: Vortrag

Mittwoch, 14. März 2018, 10:00–10:15, H 3005

Detailed study of the transverse susceptibility of the model magnet LiHoF₄ — •Felix Rucker¹, Christopher Duvinage¹, Steffen Säubert^1,2, Robert Georgii², Andreas Wendl¹, and Christian Pfleiderer¹ — ¹Technische Universität München, Physik-Department, Lehrstuhl für Topologie korrelierter Systeme — ²Heinz Maier-Leibnitz Zentrum, TUM, Garching, Germany

The low temperature properties of LiHoF₄, representing a model system for a magnetic field tuned quantum phase transition, have been investigated for over two decades. Despite recent experimental and theoretical efforts, details of the experimentally inferred magnetic phase diagram remain inconsistent with theoretical predictions. In our study, we revisit magnetic transverse susceptibility measurements at low temperatures. We find evidence for the influence of the hyperfine coupling on the magnetic transverse susceptibility, yielding insights to the dynamic properties of the quantum phase transition.