Scanning tunneling microscopy and photoemission studies of self-organised Ag nanostructures on the N-modified Cu(001) surface

SURFACE SCIENCE

卷:677

Article

Finettia, Paola^1,3  Ferrari, Luisa²  D'Addato, Sergio^3,4 

[1] Elettra Sincrotrone Trieste SCpA, I-34149 Trieste, Italy

[2] CNR ISM, Via Fosso Cavaliere 100, I-00133 Rome, Italy

[3] Univ Modena & Reggio Emilia, Dipartimento FIM, Via G Campi 213-a, I-41125 Modena, Italy

[4] CNR, Ist Nanosci, Via G Campi 213-a, I-41125 Modena, Italy

关键词: self-assembling;    Ag;    c(2 x 2)-N/Cu(001) surface;    Quantum well states;    STM;    ARPES;   

DOI  :  10.1016/j.susc.2018.07.009

来源: Elsevier

【 摘 要 】

There has been a strong interest in methods of creating nanometer scale structures and in particular forming one and two-dimensional electron confinement structures. Self -organisation has been recognised as a promising way for growing large nanostructure domains with sufficiently regular size and spacing as required for the observation of quantum well states. We investigated the electronic properties and the morphology of Ag nano structures on c(2 x 2)-N/Cu(001) surface. This system is an example of epitaxial growth confined on nanoscale regions due to the occurrence of an adsorbate induced reconstruction. Using a combination of Scanning Tunneling Microscopy and Angle Resolved Photoemission Spectroscopy techniques we were able to determine the morphology and the growth mode of Ag on N -modified Cu(001) surface and the occurrence of quantum size effects in the electron properties of Ag nanostripes and nanoislands, evidenced in the observation of quantum well states.

【 授权许可】

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