Critical Behavior of d-Band Photoelectrons Near the Curie Temperature of Nickel

J. E. Rowe and J. C. Tracy

Phys. Rev. Lett. 27, 799 – Published 20 September 1971

Abstract

We have measured the temperature dependence of photoelectron energy distributions from nickel for $T=100-400°$ C. An anomalous critical behavior in the $d$-band peak energy versus temperature was observed in the vicinity of the Curie temperature ($T_C=358°$ C). A comparison of the temperature variation of $d$-band photoelectrons from nickel and palladium indicates at least partial agreement with band-structure calculations. A lower limit of the exchange splitting $\delta E_{\mathrm{ex}}\approx 0.2-0.3$ eV is estimated from the experimental data.

• Received 28 July 1971

https://sci-hub.tw/https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.27.799