Observation of the hole state symmetry of MgB2 by inelastic scattering of fast electrons accompanied by boron K-shell excitation

Koh Saitoh, Kota Momonoi, Nobuo Tanaka, Seiichiro Onari

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Abstract

The symmetry of the p-hole state of a superconductor of MgB2 was studied by the observation of inelastic scattering anisotropy of fast electrons accompanied by boron K-shell excitation. A series of the energy-selected diffraction patterns taken at successive energy losses were decomposed into two components; the σ and π components, respectively. The magnitudes of the σ and π components as a function of energy loss, or partial electron energy-loss spectroscopy spectra, show a good correspondence to the partial density of states obtained by a theoretical calculation. A significant occupation of the σ state at just above the Fermi level, which is considered to play an important role for the formation of the superconductive state, was confirmed.

Original languageEnglish
Article number113920
JournalJournal of Applied Physics
Volume112
Issue number11
DOIs
Publication statusPublished - Dec 1 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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