Correlation effects, circular dichroism, and Fermi surfaces of bulk nickel from soft x-ray angle-resolved photoemission

J. Braun, J. Minár, H. Ebert, A. Chainani, J. Miyawaki, Y. Takata, M. Taguchi, M. Oura, and S. Shin
Phys. Rev. B 85, 165105 – Published 5 April 2012

Abstract

Within this soft x-ray photoemission study we present a detailed experimental and theoretical view on the bulk-related electronic structure of ferromagnetic nickel. Our results resolve the long-standing issue of the Fermi surfaces of bulk Ni and thereby establish the validity of a local correlation picture for its electronic structure. We performed complementary theoretical and experimental soft x-ray angle-resolved photomission spectroscopy studies to determine the Fermi surfaces and correlation effects in the bulk states of Ni. The electronic structure, obtained from the local-spin density approximation with dynamical mean-field theory and one-step photoemission calculations including matrix elements, is based on a fully relativistic treatment using a complex and energy-dependent self-energy Σ(E). The experimental band dispersions, the circular dichroism in the spectral functions, and the experimentally extracted self-energy Σ(E) are in agreement with theoretical findings.

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  • Received 17 July 2011

DOI:https://doi.org/10.1103/PhysRevB.85.165105

©2012 American Physical Society

Authors & Affiliations

J. Braun1, J. Minár1, H. Ebert1, A. Chainani2, J. Miyawaki2, Y. Takata2,*, M. Taguchi2, M. Oura2, and S. Shin2,3

  • 1Department Chemie/Physikalische Chemie, Ludwig-Maximilians Universität München, Munich, Germany
  • 2RIKEN/SPring-8, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
  • 3Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan

  • *Deceased.

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Issue

Vol. 85, Iss. 16 — 15 April 2012

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