2005/04/30 by Hiroaki Kadowaki, Yoshikazu Tabata, Masugu Sato +4 · 3 citations
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.96.016401
published as Phys. Rev. Lett. 96, 016401 (2006) · 4 pages, 3 figures
arxiv created 2005/12/17 · openalex publication_date 2006/01/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A quantum critical point (QCP) of the heavy fermion Ce(Ru1-xRhx)2Si2 (x = 0, 0.03) has been studied by single-crystalline neutron scattering. By accurately measuring the dynamical susceptibility at the antiferromagnetic wave vector k3 = 0.35 c^*, we have shown that the energy width Gamma(k3), i.e., inverse correlation time, depends on temperature as Gamma(k3) = c1 + c2 T3/2 +- 0.1, where c1 and c2 are x dependent constants, in a low temperature range. This critical exponent 3/2 +- 0.1 proves that the QCP is controlled by that of the itinerant antiferromagnet.