Electron states in ultra thin silver films on (100) vanadium surface

doctoral thesis

• Title (croatian): Elektronska stanja u ultra tankim slojevima srebra na (100) površini vanadija
• Author: Marko Kralj
• Mentor: Petar Pervan (mentor)
• Committee member: Amir Hamzić (predsjednik povjerenstva)
• Committee member: Marijan Šunjić (član povjerenstva)
• Committee member: Klaus Wandelt (član povjerenstva); strani drzavljanin: Nije dostupno
• Committee member: David Phil Woodruff (član povjerenstva); strani drzavljanin: Nije dostupno
• Committee member: Petar Pervan (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Physics); Zagreb
• Defense date and country: 2003-02-01, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics
• Universal decimal classification (UDC): 53; NATURAL SCIENCES; Physics

Abstract

In this thesis the results of high-resolution angle-resolved ultraviolet photoelectron spectroscopy (HRARUPS) and scanning tunnelling microscopy (STM) investigations of the valence band electronic structure of ultra thin silver layers on a vanadium (100) substrate are presented. The s-p and d-symmetry quantum well states have been characterised in great detail. For 1-8 monolayers (ML) Ag s-p states we found the effects of hybridisation with the substrate and the enhancement and variation of the hole-phonon coupling strength with film thickness. The D-band states were found to be perfectly confined within the film presenting an ideal example of a two-dimensional system. The surface fermi contour was determined for 1-5 ml ag from STM measurements and correlated to the electronic structure of the system.

Abstract (croatian)

U ovoj disertaciji prikazani su rezultati istraživanja valentne elektronske strukture ultra tankih slojeva srebra na vanadijevoj (100) površini metodama kutno razlučive fotoelektronske spektroskopije visoke energetske i kutne razlučivosti (HRARUPS) i skenirajuće-tunelirajuće mikroskopije (STM). Stanja kvantnih jama (QWS) s-p i d-simetrije detaljno su karakterizirana. Za s-p stanja u srebrnom sloju debljine 1-8 atomskih slojeva (ML) pronašli smo efekte hibridizacije sa podlogom, te pojačanje i varijaciju elektronfonon vezanja ovisno o debljini filma. Za D-stanja nalazimo da su savršeno kvantizirana unutar srebrnog sloja što ih čini idealnim primjerom dvodimenzionalnog elektronskog sistema. Površinska fermijeva ploha određena je za 1-5 ml srebra na temelju STM mjerenja i korelirana je s elektronskom strukturom sistema.

• Keywords: angle resolved photoemission; metallic films; quantum well states; scanning tunnelling microscopy; silver; vanadium
• Keywords (croatian): kutno-razlučiva fotoelektronska spektroskopija; metalni slojevi; skenirajuća tunelirajuća mikroskopija; srebro; stanja kvantnih jama; vanadij
• Language: english
• URN:NBN: urn:nbn:hr:217:383187
• Study programme: Title: Physics; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika (doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika)
• Type of resource: Text
• Extent: 154 str.
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-02-20 10:13:09