Surface electronic states of Au-induced nanowires on Ge(0 0 1). (19th January 2018)

• Record Type: Journal Article
• Authors: Yaji, Koichiro; Yukawa, Ryu; Kim, Sunghun; Ohtsubo, Yoshiyuki; Le Fèvre, Patrick; Bertran, François; Taleb-Ibrahimi, Amina; Matsuda, Iwao; Nakatsuji, Kan; Shin, Shik; Komori, Fumio
• Is Part Of: Journal of physics. Volume 30:Number 7(2018)
• Publication Date: 2018-01-19
• Subjects: metallic surface state -- Au adsorbed Ge(0 0 1) -- two-dimensional electron -- Rashba splitting; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aaa526
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The electronic states of Au-induced atomic nanowires on Ge(0 0 1) (Au/Ge(0 0 1) NWs) have been studied by angle-resolved photoelectron spectroscopy with linearly polarized light. We have found three electron pockets around the J ̄ Y ′ ̄ line, where the Fermi surfaces are closed in a surface Brillouin zone (SBZ). The results indicate 2D Fermi surfaces of Au/Ge(0 0 1) NWs whereas the atomic structure is 1D. On the basis of the polarization-dependent spectra, the relation between SBZ and the direction of the atomic NW, and the symmetry of the surface state are clarified. These are very useful for further studies on the atomic structure of NWs.