We investigate one-dimensional (1-D) nanostructures formed by deposition of potassium on InAs(110) surface and of pentacene on the vicinal Cu(119) surface. Scanning tunneling microscopy (STM) reveals the morphology and the long-range ordering of the nanostructures. Voltage-dependent STM images are used to investigate the electronic structure in the real space. The potassium chains give rise to a delocalized continuum of charge density, suggesting their 1-D electronic nature. 1-D pentacene rows, growing beyond the completion of the first layer, do not show a similar behavior. The formation of the 1-D electronic structures is discussed in term of the substrate-adsorbate interaction. (C) 2004 Elsevier B.V. All rights reserved.
Structural and electronic properties of one dimensional inorganic and organic structures on surfaces / L., Gavioli; M., Fanetti; Betti, Maria Grazia; M., Sancrotti. - In: MICROELECTRONIC ENGINEERING. - ISSN 0167-9317. - 76:1-4(2004), pp. 235-240. (Intervento presentato al convegno European Workshop on Materials for Advanced Metallization (MAM2004) tenutosi a Brussels, BELGIUM nel MAR 07-10, 2004) [10.1016/j.mee.2004.07.051].
Structural and electronic properties of one dimensional inorganic and organic structures on surfaces
BETTI, Maria Grazia;
2004
Abstract
We investigate one-dimensional (1-D) nanostructures formed by deposition of potassium on InAs(110) surface and of pentacene on the vicinal Cu(119) surface. Scanning tunneling microscopy (STM) reveals the morphology and the long-range ordering of the nanostructures. Voltage-dependent STM images are used to investigate the electronic structure in the real space. The potassium chains give rise to a delocalized continuum of charge density, suggesting their 1-D electronic nature. 1-D pentacene rows, growing beyond the completion of the first layer, do not show a similar behavior. The formation of the 1-D electronic structures is discussed in term of the substrate-adsorbate interaction. (C) 2004 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
