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Volumn 97, Issue 8, 2005, Pages

Self-organized metal networks at ion-etched Cu/Si and Ag/Si interfaces

Author keywords

[No Author keywords available]

Indexed keywords

ION ENERGY; KINETIC MODEL; METAL CLUSTERS; METAL NETWORKS;

EID: 21444449543     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1868855     Document Type: Article
Times cited : (6)

References (59)
  • 30
    • 21444448306 scopus 로고    scopus 로고
    • note
    • The interatomic distances for Si, Cu, and Ag are 0.24, 0.26, and 0.29 nm, respectively. Assuming the average as a reasonable estimate for the size of interface lattice cells, we obtain the average cell size a=0.25 nm for the Cu/Si interface and a=0.26 nm for the Ag/Si interface. Thus, the 400 ×400 lattice represents a 100 nm×100 nm surface fragment for the Cu/Si interface and a 105 nm×105 nm surface fragment for the Ag/Si interface
  • 36
    • 21444439654 scopus 로고    scopus 로고
    • note
    • We have extracted the bond energy from the calculated free-step energy of Cu and Ag terraces that is close to 0.15 eV (see Ref. 31). With eightfold lateral coordination adopted in our simulation, one atom at a terrace step has three unsaturated lateral bonds and therefore the energy of one bond is approximately 0.05 eV
  • 39
    • 3543060587 scopus 로고
    • St. Tosch and H. Neddermeyer, Phys. Rev. Lett. 0031-9007 10.1103/PhysRevLett.61.349 61, 349 (1988); St. Tosch and H. Neddermeyer, J. Microsc. 152, 415 (1988).
    • (1988) Phys. Rev. Lett. , vol.61 , pp. 349
    • Tosch, St.1    Neddermeyer, H.2
  • 40
    • 84927444420 scopus 로고
    • St. Tosch and H. Neddermeyer, Phys. Rev. Lett. 0031-9007 10.1103/PhysRevLett.61.349 61, 349 (1988); St. Tosch and H. Neddermeyer, J. Microsc. 152, 415 (1988).
    • (1988) J. Microsc. , vol.152 , pp. 415
    • Tosch, St.1    Neddermeyer, H.2
  • 41
    • 21444458961 scopus 로고    scopus 로고
    • note
    • For 50% coverage, we define the average feature size as the position of the first minimum of the correlation function C(r , s)=∑(h(x, y)-h̄)(h(x+r , y+s)-h̄), where h=1 for metal and h=0 for uncovered substrate. For coverage below 50%, we estimate the size by λ=k σ/ p with the empiric coefficient k=2.4 chosen such to fit the minimum of the correlation function as the coverage approaches 50% (σ is the total coverage and p is the total perimeter)
  • 47
    • 21444450714 scopus 로고    scopus 로고
    • note
    • 0 considering the definition of size in this work (see Ref. 40)
  • 54
    • 21444457765 scopus 로고    scopus 로고
    • note
    • The pre-exponential factors for adatom diffusivity depend on the adatom vibrational frequency and bond geometry (see Ref. 31). The vibrational frequency is of the same order of magnitude for most materials, and the geometry of bonds is similar for Cu and Ag. Thus, similar preexponential factors is an acceptable assumption to evaluate DsCud /DsAgd to the order of magnitude
  • 57
    • 21444434003 scopus 로고    scopus 로고
    • note
    • 0 is the initial (room) temperature, q is the energy flux through the surface due to the incoming ions, K is the thermal conductivity, Σ is the density, c is the specific heat, and t is time


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.