Avoided antiferromagnetic order and quantum critical point in [formula presented]

Authors

A. Bianchi, Los Alamos National Laboratory
R. Movshovich, Los Alamos National Laboratory
I. Vekhter, Los Alamos National Laboratory
P. G. Pagliuso, Los Alamos National Laboratory
J. L. Sarrao, Los Alamos National Laboratory

Document Type

Article

Publication Date

1-1-2003

Abstract

We measured the specific heat and resistivity of heavy fermion [Formula presented] between the superconducting critical field [Formula presented] and 9 T, with the field in the [001] direction, and at temperatures down to 50 mK. At 5 T the data show a non-Fermi liquid (NFL) behavior down to the lowest temperatures. At the field above 8 T the data exhibit a crossover from the Fermi liquid to a non-Fermi liquid behavior. We analyzed the scaling properties of the specific heat and compared both the resistivity and the specific heat with the predictions of a spin-fluctuation theory. Our analysis leads us to suggest that the NFL behavior is due to incipient antiferromagnetism (AFM) in [Formula presented] with the quantum critical point in the vicinity of [Formula presented]. Below [Formula presented] the AFM phase which competes with the paramagnetic ground state is superseded by the superconducting transition. © 2003 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review Letters

Recommended Citation

Bianchi, A., Movshovich, R., Vekhter, I., Pagliuso, P., & Sarrao, J. (2003). Avoided antiferromagnetic order and quantum critical point in [formula presented]. Physical Review Letters, 91 (25) https://doi.org/10.1103/PhysRevLett.91.257001