APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter UniPHY Group iResearch App Facebook

Applied Physics Letters / Volume 95 / Issue 12 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 95, 123107 (2009); doi:10.1063/1.3236778 (3 pages)

Structure of YSi2 nanowires from scanning tunneling spectroscopy and first principles

V. Iancu1, P. R. C. Kent2, C. G. Zeng1, and H. H. Weitering1,3

1Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37931, USA
2Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
3Materials Science & Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

View MapView Map

(Received 13 May 2009; accepted 3 September 2009; published online 23 September 2009)

Exceptionally long and uniform YSi2 nanowires are formed via self-assembly on Si(001). The in-plane width of the thinnest wires is known to be quantized in odd multiples of the silicon lattice constant. Here, we identify a class of nanowires that violates the “odd multiple” rule. The structure of the thinnest wire in this category is determined by comparing scanning tunneling spectroscopy measurements with the calculated surface density of states of candidate models by means of the Pendry R-factor analysis. The relative stability of the odd and even wire systems is analyzed via first-principles calculations.

© 2009 American Institute of Physics

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

density functional theory, electronic density of states, lattice constants, nanowires, scanning tunnelling microscopy, self-assembly, silicon alloys, yttrium alloys

PACS

  • 61.46.Km

    Structure of nanowires and nanorods (long, free or loosely attached, quantum wires and quantum rods, but not gate-isolated embedded quantum wires)

  • 73.21.Hb

    Quantum wires

  • 81.16.Dn

    Self-assembly

  • 81.16.Ta

    Atom manipulation

  • 68.37.Ef

    Scanning tunneling microscopy (including chemistry induced with STM)

  • 71.15.Mb

    Density functional theory, local density approximation, gradient and other corrections

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.3236778

PUBLICATION DATA

ISSN:

0003-6951 (print)  
1077-3118 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    K. N. Tu, R. D. Thompson, and B. Y. Tsaur, Appl. Phys. Lett. 38, 626 (1981)APPLAB000038000008000626000001.

    Y. Chen, D. A. A. Ohlberg, M. Medeiro-Ribeiro, Y. A. Chang, and R. S. Williams, Appl. Phys. Lett. 76, 4004 (2000)APPLAB000076000026004004000001.

    C. Preinesberger, S. K. Becker, S. Vandre, T. Kalka, and M. Dahne, J. Appl. Phys. 91, 1695 (2002)JAPIAU000091000003001695000001.

    B. Z. Liu and J. Nogami, J. Appl. Phys. 93, 593 (2003)JAPIAU000093000001000593000001.

    Y. Chen, D. A. A. Ohlberg, and R. S. Williams, J. Appl. Phys. 91, 3213 (2002)JAPIAU000091000005003213000001.

    Y. Zhu, W. Zhou, S. Wang, T. Ji, X. Hou, and Q. Cai, J. Appl. Phys. 100, 114312 (2006)JAPIAU000100000011114312000001.

    G. Binnig, H. Rhorer, Ch. Gerber, and E. Weibel, Phys. Rev. Lett. 50, 120 (1983).

    G. Kresse and J. Hafner, Phys. Rev. B 47, 558 (1993), 49, 14251 (1994).

    P. E. Blöchl, Phys. Rev. B 50, 17953 (1994).

    G. Kresse and J. Joubert, Phys. Rev. B 59, 1758 (1999).

    J. P. Perdew and A. Zunger, Phys. Rev. B 23, 5048 (1981).

    N. Gonzalez Szwacki and B. I. Yakobson, Phys. Rev. B 75, 035406 (2007).

    P. Kim, T. W. Odom, J. Huang, and C. M. Lieber, Phys. Rev. Lett. 82, 1225 (1999).

    L. Venkataraman and C. M. Lieber, Phys. Rev. Lett. 83, 5334 (1999).


For access to citing articles, you need to log in.


Figures (3)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Structure of YSi2 nanowires from scanning tunneling spectroscopy and first principles
Go to AIP Home
Copyright © American Institute of Physics
close