High-pressure resistivity and thermoelectric power in Yb14MnSb11

A. Akrap, N. Barišić, L. Forró, D. Mandrus, and B. C. Sales
Phys. Rev. B 76, 085203 – Published 3 August 2007

Abstract

We report the electrical transport properties of Yb14MnSb11, resistivity and thermoelectric power under pressures up to 2.3GPa. In both transport coefficients we can follow the ferromagnetic transition, which shows a shift from the ambient pressure value of 52K to lower temperatures and eventually saturation at 49K for p>2.0GPa. The high values of thermopower and its linear temperature dependence down to 100K demonstrate that the system is a bad metal. Anomalies in the thermopower below the ferromagnetic transition are rather sensitive to pressure. Our experimental observations are consistent with the model of an underscreened Kondo lattice.

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  • Received 15 November 2006

DOI:https://doi.org/10.1103/PhysRevB.76.085203

©2007 American Physical Society

Authors & Affiliations

A. Akrap1, N. Barišić1, L. Forró1, D. Mandrus2, and B. C. Sales2

  • 1Institut de Physique de la matière complexe, EPFL, CH-1015 Lausanne, Switzerland
  • 2Material Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

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Issue

Vol. 76, Iss. 8 — 15 August 2007

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