@article {4062,
	title = {LEED crystallographic analysis for the Rh(111)-(root 7x root 7)R19.1 degrees-P surface structure},
	journal = {Surface Science},
	volume = {372},
	number = {1-3},
	year = {1997},
	note = {ISI Document Delivery No.: WF207Times Cited: 7Cited Reference Count: 32},
	month = {Feb},
	pages = {312-322},
	type = {Article},
	abstract = {A recent communication [11] reported a novel structure for the (root 7 x root 7)R19.1 degrees reconstruction formed by P on the Rh(111) surface, and the present paper details the associated tensor LEED analysis. This reconstruction involves a packed arrangement of Rh pentagons and triangles for the topmost layer, with P atoms at 3/7 monolayer coverage occupying eight-coordinate sites created by the Rh pentagons. The nearly flat, densely packed Rh-P mixed layer (density of five Rh and three P atoms per seven Rh atoms in the substrate unit mesh) appears to provide a major stabilizing effect on this surface. The average P-Rh bond distance is indicated to be 2.52 Angstrom, slightly longer than that (2.38 A) in bulk Rh2P where the P atoms are also eight-coordinate. Some similarities are noted with the corresponding (rv (7) over bar x root 7)R19.1 degrees structures formed by S on the Pd(111), Cu(111) and Ag(111) surfaces.},
	keywords = {chemisorption, ENERGY ELECTRON-DIFFRACTION, HETEROCYCLIZATION SITES, low energy electron diffraction, low index single crystal surface, METAL-SURFACES, microscopy, PHOSPHORUS, rhodium, SULFIDED PD(111) SURFACE, SURFACE RELAXATION AND RECONSTRUCTION, TENSOR LEED},
	isbn = {0039-6028},
	url = {<Go to ISI>://A1997WF20700043},
	author = {Liu, W. and Wong, K. C. and Mitchell, K. A. R.}
}
@article {3429,
	title = {LEED CRYSTALLOGRAPHIC DETERMINATION FOR THE RESTRUCTURED SURFACE FORMED BY PHOSPHORUS BONDED AT CU(110)},
	journal = {Chemical Physics},
	volume = {198},
	number = {1-2},
	year = {1995},
	note = {ISI Document Delivery No.: RT464Times Cited: 2Cited Reference Count: 34},
	month = {Sep},
	pages = {235-243},
	type = {Article},
	abstract = {LEED crystallography is used to study the ordered ((2)(-11) (2)) surface structure formed on reacting PH3 with the Cu(110) surface followed by an anneal at 720 K. Intensity-versus-energy curves were measured with a video system for 13 diffracted beams at normal incidence, and they were analyzed with multiple-scattering calculations. The best correspondence between experimental and calculated I(E) curves indicates a new type of structural model in which a half-monolayer of P reconstructs the original metal surface, in effect by adding a quarter-monolayer of Cu atoms to form rows in the [112] direction. In this structure, each adsorbed P atom has six-fold coordination, and all Cu atoms in the top two metal layers bond to two P atoms. The average P-Cu length is 2.33 Angstrom, in reasonable correspondence with expectation from the structure of bulk Cu3P. Comparsions are made with other related systems.},
	keywords = {chemisorption, CRYSTAL-STRUCTURE, ENERGY ELECTRON-DIFFRACTION, OXYGEN},
	isbn = {0301-0104},
	url = {<Go to ISI>://A1995RT46400019},
	author = {Liu, W. and Vu, D. T. and Mitchell, K. A. R.}
}
@article {2866,
	title = {LEED CRYSTALLOGRAPHIC STUDIES FOR THE RH(100)-P(2X2)-S AND RH(100)-C(2X2)-S SURFACE-STRUCTURES},
	journal = {Surface Science},
	volume = {281},
	number = {1-2},
	year = {1993},
	note = {ISI Document Delivery No.: KH844Times Cited: 13Cited Reference Count: 40},
	month = {Jan},
	pages = {21-32},
	type = {Article},
	abstract = {New LEED intensity-versus-energy curves have been measured for the p(2 x 2) and c(2 x 2) surface structures formed by the chemisorption and annealing of H2S on to the (100) surface of rhodium, and the data analyzed with multiple scattering calculations to investigate structural details. Bucklings are indicated in the second metal layer of magnitudes 0.01 and 0.06 angstrom for the c(2 x 2) and p(2 x 2) surfaces respectively; for the latter structure the top layer metal atoms are laterally relaxed by around 0.05 angstrom. A surprising feature in the present work concerns the possibility that S is displaced laterally from the symmetrical centre site of 4-fold coordination, by around 0.27 angstrom, toward bridge sites. This shifting of S has a small, but definite, effect on the intensity curves of the higher order fractional beams. At this time, it does not appear as an artefact introduced by uncertainties in the direction of incidence, the second metal layer buckling or the surface Debye temperature.},
	keywords = {chemisorption, ENERGY ELECTRON-DIFFRACTION, INDUCED RELAXATION, RECONSTRUCTION, RH(100), SULFUR},
	isbn = {0039-6028},
	url = {<Go to ISI>://A1993KH84400009},
	author = {Liu, W. and Lou, J. R. and Mitchell, K. A. R.}
}
@article {7249,
	title = {LEED CRYSTALLOGRAPHIC STUDIES FOR THE CU(110)-(2 X 3)-N SURFACE-STRUCTURE},
	journal = {Surface Science},
	volume = {271},
	number = {3},
	year = {1992},
	note = {ISI Document Delivery No.: JA639Times Cited: 19Cited Reference Count: 31},
	month = {Jun},
	pages = {519-529},
	type = {Article},
	abstract = {An initial multiple-scattering analysis of LEED intensities has been performed for the Cu(110)-(2 x 3)-N surface structure. R-factor analysis supports neither simple N overlayer models nor models with Cu(100)-type top-layer reconstructions. The best correspondence between calculated and experimental intensities appears with models where every other [001] row is missing, similar to that observed for the Cu(110)-(2 x 1)-O surface. The favoured surface structure has N atoms chemisorbed on long-bridge sites such that chains of (Cu(a)-N-Cu(b)-N-Cu(a))x create a surface analogous to the ideal Cu3N(110) surface, except that every third N atom is missing from the surface chains. There is evidence that lateral displacement of copper atoms from the ideal positions leads to two different N-Cu surface bond lengths with values near 1.83 and 1.90 angstrom. Each N atom also bonds to two Cu atoms in the second layer with equal bond lengths of about 1.88 angstrom.},
	keywords = {ADSORPTION, AES, chemisorption, CU(110)(2X3)-N STRUCTURE, ENERGY ELECTRON-DIFFRACTION, NI(110), NITRIDE, NITROGEN, RECONSTRUCTION, SITE},
	isbn = {0039-6028},
	url = {<Go to ISI>://A1992JA63900025},
	author = {Grimsby, D. T. V. and Zhou, M. Y. and Mitchell, K. A. R.}
}
@article {7093,
	title = {A REVISED LEED DETERMINATION OF THE RELAXATIONS PRESENT AT THE (311) SURFACE OF COPPER},
	journal = {Solid State Communications},
	volume = {78},
	number = {9},
	year = {1991},
	note = {ISI Document Delivery No.: FQ979Times Cited: 13Cited Reference Count: 14},
	month = {Jun},
	pages = {841-843},
	type = {Article},
	abstract = {Low-energy electron diffraction (LEED) has been used to determine the structural relaxations present at the (311) surface of copper. Two sets of intensity vs energy curves were measured for normal incidence for 14 beams over a total energy range of 1932 eV. These data were compared with intensities calculated with the layer doubling method for a range of structural models, the comparisons being made with both the Zanazzi-Jona and Pendry R-factor schemes. Average values for the first and second interlayer spacings, and percentage changes from the bulk value, are found to be d1 = 0.96 +/- 0.02 angstrom (-11.9\%) and d2 = 1.11 +/- 0.02 angstrom (+1.8\%) respectively. These percentage changes are much closer to the theoretical relaxations (-12.2\% and +4.4\% respectively) calculated by Jiang et al. [Phys. Rev. B35, 7952 (1987)] than those indicated earlier by LEED for the Cu(311) surface using a 1978 data base.},
	keywords = {ENERGY ELECTRON-DIFFRACTION},
	isbn = {0038-1098},
	url = {<Go to ISI>://A1991FQ97900012},
	author = {Parkin, S. R. and Watson, P. R. and McFarlane, R. A. and Mitchell, K. A. R.}
}
