Effect of Hydrostatic Pressure on the Electron Fermi Surfaces in Pd and Pt

Abstract

We present measurements of the pressure derivative $\frac{d\left(\ln S\right)}{\mathrm{dp}}$ of the Fermi surface cross section $S$ at [100] and [111] for the electrons in Pd and Pt in the range 0-25 atm. The results suggest that the electron pressure derivatives in these metals are nearly isotropic. Along [100] $\frac{d\left(\ln S\right)}{\mathrm{dp}}=(4.0\mathrm{}\pm 0.4)\times {10}^{-4\mathrm{}} \mathrm{and} (3.2\mathrm{}\pm 0.3)\times {10}^{-4\mathrm{}}$ ${\mathrm{kbar}}^{-1\mathrm{}}$ for Pd and Pt, respectively.