메뉴 건너뛰기




Volumn 298, Issue 5597, 2002, Pages 1381-1387

Molecule cascades

Author keywords

[No Author keywords available]

Indexed keywords

GATES (TRANSISTOR); MOLECULES; SCANNING TUNNELING MICROSCOPY;

EID: 0037112256     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1076768     Document Type: Article
Times cited : (449)

References (45)
  • 9
    • 0035834415 scopus 로고    scopus 로고
    • Y. Huang et al., Science 294, 1313 (2001).
    • (2001) Science , vol.294 , pp. 1313
    • Huang, Y.1
  • 12
    • 0032679023 scopus 로고    scopus 로고
    • I. Amlani et al., Science 284, 289 (1999).
    • (1999) Science , vol.284 , pp. 289
    • Amlani, I.1
  • 16
    • 2242486895 scopus 로고
    • February
    • D. D. Swade, Sci. Am. 268, 86 (February 1993).
    • (1993) Sci. Am. , vol.268 , pp. 86
    • Swade, D.D.1
  • 18
    • 2242453666 scopus 로고    scopus 로고
    • note
    • 18O.
  • 21
    • 0037051876 scopus 로고    scopus 로고
    • G. Witte, Surf. Sci. 502-503, 405 (2002).
    • (2002) Surf. Sci. , vol.502-503 , pp. 405
    • Witte, G.1
  • 23
    • 2242433036 scopus 로고    scopus 로고
    • note
    • A single CO molecule apparently decreases the local electronic density of states (LDOS) at the adsorption site at the Fermi level, which causes the feedback mechanism to move the STM tip closer to the surface in order to keep a constant tunnel current. In contrast, the dimer shows an increase in the LDOS between the two CO molecules.
  • 24
    • 2242434849 scopus 로고    scopus 로고
    • note
    • The hopping rates were influenced by the presence of the tip (either slowed or sped up, depending on the tip position) even at low tunnel current (I ≈ 50 pA) and bias voltage between V = 5 mV and V = 50 mV. The size of the influence depends primarily on the tip height (rather than on I or V) when V is kept well below the 35-meV vibrational excitation.
  • 25
    • 0037087975 scopus 로고    scopus 로고
    • N. Knorr et al., Phys. Rev. B 65, 115420 (2002).
    • (2002) Phys. Rev. B , vol.65 , pp. 115420
    • Knorr, N.1
  • 29
    • 0000985135 scopus 로고
    • R. Raval et al., Surf Sci. 203, 353 (1988).
    • (1988) Surf Sci. , vol.203 , pp. 353
    • Raval, R.1
  • 31
    • 2242441255 scopus 로고    scopus 로고
    • note
    • The step in conductance is ∼20% at IVI = 35 mV and ∼ 15% at IVI = 4 mV for CO arranged in the √3 by √3 lattice, but only half as large for isolated CO molecules. We did not observe the 41-mV CO to Cu external stretch mode.
  • 32
    • 2242493067 scopus 로고    scopus 로고
    • note
    • -1). The tunneling mass ratio is then determined with the rate for the other isotope.
  • 33
    • 2242462631 scopus 로고    scopus 로고
    • note
    • Tunneling and classical over-the-barrier processes both depend on the stiffness of the full many-dimensional potential energy surface in the coordinates perpendicular to the reaction path. This makes it difficult to determine the value, and even the sign, of isotope shifts; for example, modes that are stiffer in the barrier than in the initial state favor passage of heavier isotopes.
  • 41
    • 0001951703 scopus 로고
    • C. A. Mead, L. A. Conway, Eds. (Addison-Wesley, Reading, MA)
    • C. L. Seitz, in Introduction to VLSI Systems, C. A. Mead, L. A. Conway, Eds. (Addison-Wesley, Reading, MA, 1980), p. 218-262.
    • (1980) Introduction to VLSI Systems , pp. 218-262
    • Seitz, C.L.1
  • 43
    • 2242454535 scopus 로고    scopus 로고
    • note
    • Chain polymerization initiated with an STM tip has been demonstrated at room temperature (44).
  • 45
    • 2242492187 scopus 로고    scopus 로고
    • note
    • We thank J. P. Sethna for useful discussions and preliminary analysis of these results and G. Northrop for his design of a three-input sorter implemented in CMOS 9S technology.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.