Low-frequency spin dynamics in the CeMIn5 materials. Academic Article

abstract

• We measure the spin lattice relaxation of the planar In(1) nuclei in the CeMIn5 materials, extract quantitative information about the low energy spin dynamics of the lattice of Ce moments in both CeRhIn5 and CeCoIn5, and identify a crossover in the normal state. Above a temperature T(*) the Ce lattice exhibits "Kondo gas" behavior characterized by local fluctuations of independently screened moments; below T(*) both systems exhibit a "Kondo liquid" regime in which interactions between the local moments contribute to the spin dynamics. Both the antiferromagnetic and superconducting ground states in these systems emerge from the Kondo liquid regime. Our analysis provides strong evidence for quantum criticality in CeCoIn5.

authors

• Abanov, Artem

published proceedings

• Phys Rev Lett

author list (cited authors)

• Curro, N. J., Sarrao, J. L., Thompson, J. D., Pagliuso, P. G., Kos, S., Abanov, A. r., & Pines, D.

citation count

• 50

complete list of authors

• Curro, NJ||Sarrao, JL||Thompson, JD||Pagliuso, PG||Kos, S||Abanov, Ar||Pines, D

publication date

• June 2003

publisher

• American Physical Society (APS)  Publisher

published in

• Physical Review Letters  Journal

keywords

• 51 Physical Sciences
• 5108 Quantum Physics

PubMed Central ID

• 12857337

Digital Object Identifier (DOI)

• 10.1103/PhysRevLett.90.227202

start page

• 227202

volume

• 90

issue

• 22

URL

• http://dx.doi.org/10.1103/physrevlett.90.227202