Dissociative process in Auger-electron spectra of alloys

✍ Scribed by Masahide Ohno

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 278 KB
• Volume: 107
• Category: Article
• ISSN: 0368-2048
• DOI: 10.1016/s0368-2048(00)00093-1

✦ Synopsis

The dissociative-decay broadening of the final two-hole bound state of the Auger-transition, arising from its mixing with delocalized band states with one hole in 'A' band and one hole in 'B' band in 'AB' alloy, was proposed by Bennett et al. to explain the excessive width of the two-hole bound state [Phys. Rev. B, 27 (1983) 2194]. The many-body effect of the dissociative process is discussed in detail, using a simple model band and Green's function method. The hole-hole interaction U empirically determined from the Auger-electron spectrum, could be affected by the energy shift of the two-hole bound state by the virtual dissociative process. The interplay between the localization and delocalization of the two-hole state by two different mechanisms is discussed.