Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 19: Poster Session: Correlated Electrons 1

TT 19.10: Poster

Montag, 20. März 2017, 15:00–19:00, P2-EG

Magnetic anisotropy in YbNi4P2 — •Sven Friedemann1, Sara Karbassi1, Saman Ghannadzadeh2, Manuel Brando3, Kristin Kliemt4, and Cornelius Krellner41HH Wills Laboratory, University of Bristol, UK — 2High Field Magnet Laboratory, University of Radboud, Nijmegen, NL — 3Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — 4Physikalisches Institut, Johann Wolfgang Goethe-Universität, Frankfurt am Main, Germany

YbNi4P2 is a rare example of a heavy-fermion compound with ferromagnetic (FM) order. It allows to study the emergence of a FM quantum critical point (QCP) which marks a long-standing challenge in metallic compounds as FM QCPs are avoided in most systems through a change of the transition to 1st order or through an intervening antiferromagnetic phase. YbNi4P2 by contrast was demonstrated to have a readily accessible QCP when suppressing the FM order with substitution of phosphorous by arsenic [1]. An alternative route to access the FM QCP could be via a transverse field tuning for strongly anisotropic FM order. We use angular dependent magnetoresistance measurements to extract the anisotropy of the Landé g factor. This will be the basis to understand under which conditions a FM QCP may be accessed via transverse field tuning.
Steppke, A., et al., Science, 339, 933 (2013).

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