The surface morphology of a growing crystal studied by thermal energy atom scattering (TEAS)

Miguel, J. J. de; Sánchez, Alejandro D.; Cebollada, A.; Gallego, Jorge; Ferrón, J.; Ferrer, S.

doi:10.1016/s0039-6028(87)80550-2

Cited by 126 publications

(54 citation statements)

References 12 publications

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“…Cu(100) 0.505 0.48 [17] 0.40 [45] 0.28±0.06 [40] 0.39±0.06 [36] 0.36±0.06 [41] 0.44 [20] 0.52±0.05 [46] 0.48 [27] 0.44 [25] 0.38 [37]-AFW 0.53 [37]-VC 0.51 [19] 0.43 [47] 0.49 [42] 0.53 [26] 0.79 P2Cu(100)/with-up-step/[away from the step] 0.483 P3Cu(100)/with-up-step/[over the step] 0.79 0.77 [27,26] 0.51 P4Cu(100)/with-up-step/[along the step] 0.499 P5Cu(100)/with-down-step/[away from the step] 0.847 0.84 [27] 0.83 [42] P6Cu(100)/with-down-step/[along the step] 0.265 0.25 [27] 0.26 [42] P7Cu(110)/[along open channel] 0.230 0.24 [ 27] 0.25 [25] 0.23 [37]-AFW 0.28 [37]-VC 0.23 [26] 0.87 P8Cu(110)/[perpendicular to the open channel] 1.146 1.15 [27] P9Cu ( 8.7x10…”

Section: P1mentioning

confidence: 99%

Calculated pre-exponential factors and energetics for adatom hopping on terraces and steps of Cu(100) and Cu(110)

et al. 2006

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We have calculated the vibrational dynamics and thermodynamics for Cu adatom hopping on terraces and near step edges on Cu(100) and Cu(110), using the embedded atom method for the interatomic potential. The local vibrational densities of states were calculated using real space Green's function formalism and the thermodynamical functions were evaluated in the harmonic approximation. The calculated diffusion energy barriers for six specific local environments on Cu(100) agree well with experimental and previous theoretical results.Contribution of vibrational entropy to the change in the free energy of the system as the adatom moves from the equilibrium configuration (hollow site) to the saddle point, is found to be as much as 55meV (144 meV) at 300K (600K). The prefactors for all 13 cases are found to be of the order of 10 -3 cm 2 /s, almost independent of temperature, and the respective activation energy barriers.

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Section: P1mentioning

confidence: 99%

Calculated pre-exponential factors and energetics for adatom hopping on terraces and steps of Cu(100) and Cu(110)

et al. 2006

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“…0X36 AE 0X03 [95] SPA-LEED Island distances at 0.3 ML 0.43 [46] MD-N-Body-Pot. 0.43 [168] MD-CEM 0.43 [176] EMT 0X39 AE 0X06 [167] LEIS Diffusion onset at 140 AE 5 K 0.38a0.53 [177] EAM: AFWaVC Potentials 0.40 [166] He-scattering Stationary step densities 0.45 [178] EAM AgaAg(1 0 0) 0X40 AE 0X05 [170] LEIS-TOF Diffusion onset at 160 AE 5 K 0X50 AE 0X03 [179] ab initio FP-LMTO 0X330 AE 0X005 [87] STM n x at 295±370 K, i ! 1 0X25 AE 0X02 [45] MDaMC-CEM 0.48 [180] MD-EAM 0.365 [114] EMT 0.48 [177] EAM [183] EM for Ag on n x TY i ) 1 since T b 450 K 0.081 [158] ab initio DFT-LDA 2 ML AgaW(1 1 0) 0X051 AE 0X024 [184] He-scattering n x T, subsequent ann.…”

Section: Energy Barriers and Attempt Frequencies From Nucleation Densmentioning

confidence: 99%

Microscopic view of epitaxial metal growth: nucleation and aggregation

Brune

1998

Surface Science Reports

925

140

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“…Within the conventional picture of homoepitaxial growth, this 3D behaviour is attributed to a lack of thermal mobility of the adatoms; see e.g. [7][8][9] and references therein.…”

Section: Pacsmentioning

confidence: 99%

“…TEAS is rapidly becoming a powerful tool to characterize the surface morphology and to distinguish the various modes of removal and/or growth [7,8,13,[15][16][17][18][19][20][21]. The aim of this section is to outline briefly the basic principles.…”

Section: Analytical Proceduresmentioning

confidence: 99%

New phenomena in homoepitaxial growth of metals

et al. 1991

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Abstract. The growth of Pt(lll) by Pt vapour deposition is studied by He diffraction as a function of substrate temperature and deposition rate. At a deposition rate of about 2.5 x 10 -2. monolayers/second several growth modes are observed: layer-by-layer (2D-) growth at 450 K <~ Ts <~ 800 K, multilayer (3D-) growth at 340 K <~ Ts <~ 450 K and reentrant layer-by-layer (2D-) growth at Ts <~ 340 K. The observed growth modes and in particular the reentrant 2D-growth are shown to be characteristic of growing Pt(111) under clean conditions, i.e. not influenced by contaminants. The influence of the intra-and interlayer mass transport on the growth mode is discussed in the light of experimental and simulation results. The 3D-growth mode is attributed to the existence of an activation barrier which suppresses the descent of adatoms from the top of the growing adatom islands onto the lower terraces. The barrier can be overcome by thermal adatoms at Ts >~ 450K enabling interlayer mass transport which leads to 2D-growth. The reentrant 2D-growth occurs due to a break down of this barrier for small, irregularly shaped islands.

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The surface morphology of a growing crystal studied by thermal energy atom scattering (TEAS)

Cited by 126 publications

References 12 publications

Calculated pre-exponential factors and energetics for adatom hopping on terraces and steps of Cu(100) and Cu(110)

Calculated pre-exponential factors and energetics for adatom hopping on terraces and steps of Cu(100) and Cu(110)

Microscopic view of epitaxial metal growth: nucleation and aggregation

New phenomena in homoepitaxial growth of metals

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