Cyclotron Resonance in Nickel

Azbel-Kaner cyclotron resonance was studied at 277 GHz and 1.5 ^∘{}K in a (100)-plane single-crystal specimen of Ni. Resonances from both the neck and belly of the Cu-like majority-spin s-p-band Fermi surface were seen. The neck yielded m*m₀=0.35±0.014 when →H was along $〈011〉$. Beat structure in the subharmonic resonances suggested that belly orbits on both the majority-and minority-spin s-p-band Fermi surfaces were observed for →H within 28^∘{} of $〈001〉$. As →H was rotated away from $〈001〉$ the heavier mass increased smoothly from m*m₀=5.09 to 5.9 while the lighter mass increased from 4.33 to 4.86. Only one of the three pairs of symmetry-related minority-spin d-band hole pockets were seen. The pockets having their greatest dimension along $〈001〉$ yielded an effective mass which increased from m*m₀=0.75±0.03 at $〈001〉$ to m*m₀=1.11 when →H was 34^∘{} from $〈001〉$.