Metamagnetism and the Fifth Order Susceptibility in UPt3

Abstract

An enhanced susceptibility is a natural consequence of the "heavy fermion" (HF) state rendering the possibility of measurably large nonlinear susceptibilities. In recent work a universal behavior of the peaks observed in the linear (\Chi_1) and the third order (\Chi_3) susceptibility in HF metamagnets has been identified. This universality is well accounted for by a single energy scale model considering on-site correlations only. A prediction of this model is a peak in the fifth order susceptibility, \Chi_5, as well. In the first measurements on a HF metamagnet, UPt3 reported herein, we find that Chi_5 rather than attaining a peak, saturates at low temperatures and is positive. The thermodynamic implications of these towards the stability of the metamagnetic HF state are discussed.

10 pages, 4 figures

References in corpus (4)

• Mean Field study of the heavy fermion metamagnetic transition
• Metamagnetism and Lifshitz Transitions in Models for Heavy Fermions
• Properties of an almost localized Fermi liquid in applied magnetic field revisited: Statistically consistent Gutzwiller approach
• Quasiparticle properties of strongly correlated electron systems with itinerant metamagnetic behavior

Cited by in corpus (6)

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• Observation of sharp metamagnetic transition, Griffiths like phase and glassy nature in double perovskite Eu2CoMnO6
• Field-induced anomaly in the anisotropic non-Fermi-liquid normal state of UBe${}_{13}$
• Electrotoroidicity: New Paradigm for Transverse Electromagnetic Responses