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Volumn 114, Issue 9, 2001, Pages 4206-4209

Far-ranged transient motion of "hot" oxygen atoms upon dissociation

Author keywords

[No Author keywords available]

Indexed keywords

CATALYSIS; CHEMISORPTION; DISSOCIATION; GREEN'S FUNCTION; KINETIC ENERGY; LATTICE CONSTANTS; LOW TEMPERATURE EFFECTS; MOLECULAR DYNAMICS; OXYGEN; RANDOM PROCESSES; SCANNING TUNNELING MICROSCOPY;

EID: 0035280650     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article
Times cited : (52)

References (36)
  • 8
    • 57649114999 scopus 로고    scopus 로고
    • Most recently, it has been found by Schmid and Varga (M. Schmid and P. Varga, Tu-P-003, ECOSS-18, Vienna, 1999) that in the far-ranged random distribution found earlier (Ref. 2) each protrusion in the STM image considered as a single atom might represent a pair of neighboring O atoms
    • Most recently, it has been found by Schmid and Varga (M. Schmid and P. Varga, Tu-P-003, ECOSS-18, Vienna, 1999) that in the far-ranged random distribution found earlier (Ref. 2) each protrusion in the STM image considered as a single atom might represent a pair of neighboring O atoms.
  • 21
    • 0000038127 scopus 로고    scopus 로고
    • Phys. Rev. B 60, 2921 (1999).
    • (1999) Phys. Rev. B , vol.60 , pp. 2921
  • 22
    • 0003930392 scopus 로고
    • edited by D. G. Pettifor and D. L. Weaire Springer, Berlin
    • The calculations are done in tight-binding basis using an approximated Green's function for the s and d orbitals of the substrate atoms. The approximation for the s-orbital utilizes Haydock's recursion method up to the second level with a square root terminator [R. Haydock, in The Recursion Method and Its Applications, edited by D. G. Pettifor and D. L. Weaire (Springer, Berlin, 1985)]. The Green's function for the d orbitals is derived from Friedels model.
    • (1985) The Recursion Method and Its Applications
    • Haydock, R.1
  • 27
    • 85056015156 scopus 로고    scopus 로고
    • note
    • in the initial energy.
  • 30
    • 0001691104 scopus 로고    scopus 로고
    • This is in contrast to calculations for O on Pt(111), where the oxygen atom appears as a protrusion in the STM image only if the tip apex is contaminated with CO [M. L. Bocquet, J. Cerda, and P. Sautet, Phys. Rev. B 59, 15437 (1999)].
    • (1999) Phys. Rev. B , vol.59 , pp. 15437
    • Bocquet, M.L.1    Cerda, J.2    Sautet, P.3
  • 31
    • 0000092002 scopus 로고
    • It is known from STM measurements of CO and benzene on Pt(111) [J. A. Stroscio and D. M. Eigler, Science 254, 1319 (1991);
    • (1991) Science , vol.254 , pp. 1319
    • Stroscio, J.A.1    Eigler, D.M.2
  • 34
    • 0028385923 scopus 로고
    • P. Sautet and M.-L. Bocquet, Surf. Sci. Lett. 304, L445 (1994)] that different binding sites of adsorbates might be discriminated by their different contrast in STM images.
    • (1994) Surf. Sci. Lett. , vol.304
    • Sautet, P.1    Bocquet, M.-L.2
  • 35
    • 57649127416 scopus 로고    scopus 로고
    • note
    • z orbital might be shifted somewhat in energy.
  • 36
    • 57649126829 scopus 로고    scopus 로고
    • note
    • y orbitals of the O atom have a very small overlap with the wave function of the tip, but they have a strong overlap with the s orbitals of the neighboring silver atoms. This leads to a strong broadening of the LDOS of the s orbitals of those atoms, around the Fermienergy, and also a relatively high density of states below the Fermienergy, as compared to the LDOS of the silver atoms further away from oxygen. Thus, also the s orbitals of the four silver atoms neighboring the oxygen contribute to the strong local current at negative bias voltages.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.