Understanding electron-positron momentum densities in solids : effect of the positron distribution

• Autorzy: Rubaszek A.

Identyfikatory

DOI

10.1515/nuka-2015-0137

• Konferencja: Polish Seminar on Positron Annihilation (42 nd ; 29.06-01.07.2016 ; Lublin, Poland)
• Języki publikacji: EN

Abstrakty

EN

The influence of the positron distribution on the electron-positron (e-p) momentum densities (MDs) is studied in terms of the l (l = s, p, d, f) character of the initial electronic state. The effect of the positron is discussed for momenta in the extended and reduced zone scheme on the example of Al (simple metal), Cu (metal with almost filled d shell), and Cr (transition metal). Present result indicates a weak sensitivity of the e-p MD inside the central Fermi surface to the positron charge density for the delocalized s and p electrons. In the case of d states, the effect of the positron on the relevant contribution to the e-p MD directly reflects the degree of localization of d electrons in the electron density of states.

Słowa kluczowe

EN

positron annihilation; electronic band structure; positron states

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2015
• Tom: Vol. 60, No. 4, part 1
• Strony: 759--763
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Rubaszek A.

• W. Trzebiatowski Institute of Low Temperatures and Structure Research, Polish Academy of Sciences, P. O. Box 1410, 50-950 Wrocław 2, Poland, Tel.: [phone], Fax: [phone]

Bibliografia

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