Separation of energy scales in the kagome antiferromagnet TmAgGe: a magnetic-field-orientation study up to 55 T

Abstract

TmAgGe is an antiferromagnet in which the spins are confined to distorted kagome-like planes at low temperatures. We report angle-dependent measurements of the magnetization $M$ in fields of up to 55 T that show that there are two distinct and separate energy scales present in TmAgGe, each responsible for a set of step-like metamagnetic transitions; weak exchange interactions and strong crystalline electric field (CEF) interactions. Simulations of $M$ using a three-dimensional, free-energy minimization technique allow us to specify for the first time the physical origin of the metamagnetic transitions in low, in-plane fields. We also show that the transitions observed with the field perpendicular to the kagome planes are associated with the CEF-split multiplet of Tm.

References in corpus (2)

• Thermodynamic and transport properties of RAgGe (R=Tb-Lu) single crystals
• Angular dependent planar metamagnetism in the hexagonal compounds TbPtIn and TmAgGe

Cited by in corpus (9)

• Magnetic quantum oscillations in YBa${}_2$Cu${}_3$O${}_{6.61}$ and YBa${}_2$Cu${}_3$O${}_{6.69}$ in fields of up to 85 T; patching the hole in the roof of the superconducting dome
• Unusual high-field metal in a Kondo insulator
• Unconventional Magnetic Oscillations in Kagome Mott Insulators
• Giant crystal-electric-field effect and complex magnetic behavior in single-crystalline CeRh3Si2
• A de Haas-van Alphen study of the filled skutterudite compounds PrOs${}_4$As${}_{12}$ and LaOs${}_4$As${}_{12}$
• Electronic structure and physical properties of candidate topological material GdAgGe
• Thermodynamic evidence of fermionic behavior in the vicinity of one-ninth plateau in a kagome antiferromagnet
• Investigation of metamagnetism and crystal-field splitting in pseudo-hexagonal CeRh${}_3$Si${}_2$
• Magnetic ground state and perturbations of the distorted kagome Ising metal TmAgGe