Skip to main content
eScholarship
Open Access Publications from the University of California

Critical phenomena and the quantum critical point of ferromagnetic Zr1-xNbxZn2

  • Author(s): Sokolov, DA
  • Aronson, MC
  • Gannon, W
  • Fisk, Z
  • et al.
Abstract

We present a study of the magnetic properties of Zr1-xNbxZn2, using an Arrott plot analysis of the magnetization. The Curie temperature TC is suppressed to zero temperature for Nb concentration xC=0.083±0.002, while the spontaneous moment vanishes linearly with TC as predicted by the Stoner theory. The initial susceptibility χ displays critical behavior for x≤xC, with a critical exponent which smoothly crosses over from the mean field to the quantum critical value. For high temperatures and x≤xC, and for low temperatures and x xC we find that χ-1=χ0-1+aT4/3, where χ0-1 vanishes as x→xC. The resulting magnetic phase diagram shows that the quantum critical behavior extends over the widest range of temperatures for x=xC, and demonstrates how a finite transition temperature ferromagnet is transformed into a paramagnet, via a quantum critical point. © 2006 The American Physical Society.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View