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SKM 2021 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 9: Poster Session: Correlated Electrons

TT 9.13: Poster

Dienstag, 28. September 2021, 13:30–16:00, P

Pump-Probe AC Susceptibility of LiHoxY1−xF4 (x=4.5 %) — •Michael Lampl, Andreas Wendl, Markus Kleinhans, Laura Stapf, Marc A. Wilde, and Christian Pfleiderer — Physik-Department Technical University of Munich, Garching, Germany

LiHoF4 under a transverse magnetic field exhibits one of the best understood examples of a quantum critical point. Substitutional doping of Ho with non-magnetic Yttrium may be used to study the effects of disorder [1]. In the highly diluted system LiHoxY1−xF4 (x=4.5 %), investigated in our study, the nature of the ground state is still unresolved [2]. To explore the ground state properties of this system, multiple studies employed so-called pump-probe susceptibility measurements [3-5]. We revisit this question and report a study of the pump-probe susceptibility as a function temperature and field orientation, covering a wide parameter range.
[1] J. P. Gingras and P. Henelius, J. Phys.: Conf. Ser. 320, 012001 (2011).
[2] J. A. Quilliam et al., Phys. Rev. Lett. 101, 187204 (2008).
[3] S. Ghosh et al., Science 296, 2195 (2002)
[4] M. A. Schmidt et al., Proc. Natl. Acad. Sci. USA 111, 3689 (2014)
[5] D. M. Silevitch et al., Nature Com. 10, 4001 (2019)

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