Huge First-Order Metamagnetic Transition in the Paramagnetic Heavy-Fermion System CeTiGe

Abstract

We report on the observation of large, step-like anomalies in the magnetization ($\Delta M=0.74$\,${\mu }_{\mathrm{B}}$/Ce), in the magnetostriction ($\Delta l/l_0=2.0\cdot 10^{-3}$), and in the magnetoresistance in polycrystals of the paramagnetic heavy-fermion system CeTiGe at a critical magnetic field ${\mu }_0{H}_c\approx$ 12.5\,T at low temperatures. The size of these anomalies is much larger than those reported for the prototypical heavy-fermion metamagnet CeRu${}_2$Si${}_2$. Furthermore, hysteresis between increasing and decreasing field data indicate a real thermodynamic, first-order type of phase transition, in contrast to the crossover reported for CeRu${}_2$Si${}_2$. Analysis of the resistivity data shows a pronounced decrease of the electronic quasiparticle mass across $H_c$. These results establish CeTiGe as a new metamagnetic Kondo-lattice system, with an exceptionally large, metamagnetic transition of first-order type at a moderate field.

5 pages, 4 figures

References in corpus (2)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum Criticality in Heavy Fermion Metals

Cited by in corpus (16)

• Review on magnetic and related properties of RTX compounds
• Magnetotransport of dirty-limit van Hove singularity quasiparticles
• Heavy fermions in high magnetic field
• Interplay between Kondo suppression and Lifshitz transitions in YbRh${}_2$Si${}_2$ at high magnetic fields
• Possible quadrupole density wave in the superconducting Kondo lattice CeRh2As2
• Metamagnetism and Lifshitz Transitions in Models for Heavy Fermions
• Temperature - pressure phase diagram of CeCoSi: Pressure induced high-temperature phase
• Fermi Surface Properties, Metamgnetic Transition and Quantum Phase Transition of CeRu${}_2$Si${}_2$ and Its Alloys Probed by the dHvA Effect--Fermi Surface Studies on the Itinerant and Localized Dichotomy of $f$ Electron Nature
• Local-Ising type magnetic order and metamagnetism in the rare-earth pyrogermanate Er${}_2$Ge${}_2$O${}_7$
• Anomalous metamagnetism in the low carrier density Kondo lattice YbRh3Si7
• Lifshitz transitions and quasiparticle de-renormalization in YbRh${}_2$Si${}_2$
• Field induced Lifshitz transition in UPt${}_2$Si${}_2$: Fermi surface under extreme conditions
• Missing magnetism in Sr${}_4$Ru${}_3$O${}_{10}$: Indication for Antisymmetric Exchange Interaction
• Magnetic phenomena in equiatomic ternary rare earth compounds
• Remarkable magnetostructural coupling around the magnetic transition in CeCo${}_{0.85}$Fe${}_{0.15}$Si
• Strong magnetoelastic effect in CeCo${}_{1-x}$Fe${}_x$Si as Néel order is suppressed