High-resolution angle-resolved photoemission study of Fe (1 1 0)

✍ Scribed by X.Y. Cui; K. Shimada; Y. Sakisaka; H. Kato; Y. Aiura; M. Higashiguchi; Y. Miura; H. Namatame; M. Taniguchi

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 142 KB
• Volume: 383
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2006.03.084

✦ Synopsis

High-resolution low-temperature angle-resolved photoemission spectroscopy of Fe(1 1 0) single crystal has been done to evaluate many-body interactions on the quasi-particles at the Fermi level. A kink structure in the minority-spin band (B k ) on the Fermi surface (FS) around the G point has been clearly observed at the binding energy of $40 meV, but it is absent for the majority-spin band (B m ) on the FS around the G point. Additional spectral feature has been observed for B m , indicating a coexistence of a surface resonance state. By the analyzes of the imaginary part of the self-energy, we have confirmed that the kink structure is derived from the electron-phonon interaction.