Magnetic hyperfine field at <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">In</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>111</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> probes in the topmost atomic layer of Ni(111) surfaces

J. Voigt; R. Fink; G. Krausch; B. Luckscheiter; R. Platzer; U. Wöhrmann; X. L. Ding; G. Schatz

doi:10.1103/PhysRevLett.64.2202

Magnetic hyperfine field at ${}^{111}{In}$ probes in the topmost atomic layer of Ni(111) surfaces

J. Voigt, R. Fink, G. Krausch, B. Luckscheiter, R. Platzer, U. Wöhrmann, X. L. Ding, and G. Schatz

Phys. Rev. Lett. 64, 2202 – Published 30 April 1990

Abstract

The magnetic hyperfine field was measured at ${}^{111}{In}$ $(^{111}$ Cd) probes on Ni(111) surfaces utilizing the perturbed γγ-angular-correlation method. Over the entire temperature range up to the Curie temperature the magnetic hyperfine field at probes in the topmost monolayer was found to be reduced as compared to the field for probes in the 3.5th monolayer and in bulk. The probe lattice location was inferred from the structural information derived through simultaneous measurement of the electric-field-gradient tensor acting at probe nuclei.