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

Research output: Contribution to journalArticle

1 Citation (Scopus)

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
Externally publishedYes

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inelastic scattering
boron
energy dissipation
symmetry
excitation
electrons
occupation
diffraction patterns
electron energy
anisotropy
spectroscopy
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Observation of the hole state symmetry of MgB2 by inelastic scattering of fast electrons accompanied by boron K-shell excitation. / Saitoh, Koh; Momonoi, Kota; Tanaka, Nobuo; Onari, Seiichiro.

In: Journal of Applied Physics, Vol. 112, No. 11, 113920, 01.12.2012.

Research output: Contribution to journalArticle

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