@article {5182,
	title = {A structural refinement with LEED for the Pd(100)-(root 5 x root 5)R27 degrees-O surface},
	journal = {Surface Science},
	volume = {494},
	number = {3},
	year = {2001},
	note = {ISI Document Delivery No.: 501BUTimes Cited: 22Cited Reference Count: 9},
	month = {Dec},
	pages = {L799-L804},
	type = {Letter},
	abstract = {The re-analysis with LEED for the Pd(1 0 0)-(root5 x root5)R27 degrees -O surface structure confirms the basic model, reported previously by Vu et al. [Surf. Sci. 318 (1994) 129], in which a PdO(0 0 1) overlayer is stacked on to the Pd(1 0 0) surface. The refinement reduces the Pendry R-factor to 0.306, from 0.44 in the earlier study, and the detailed structure at the metal-oxide interface shows evidence for a balancing of interactions compared with requirements for the oxide and metal separately. Pd atoms in the oxide layer have a corrugation estimated at 0.20 Angstrom, and the binding of this layer to the metal induces a substantial rumpling in the interface region, which covers especially the first and second metallic layers with corrugations of 0.45 and 0.15 Angstrom respectively. (C) 2001 Elsevier Science B.V. All rights reserved.},
	keywords = {CRYSTAL SURFACES, LOW INDEX SINGLE, OXYGEN, palladium low energy electron diffraction (LEED), SURFACE RELAXATION AND RECONSTRUCTION},
	isbn = {0039-6028},
	url = {<Go to ISI>://000172663800002},
	author = {Saidy, M. and Warren, O. L. and Thiel, P. A. and Mitchell, K. A. R.}
}
@article {4061,
	title = {The structure of the Pd(111)-(root 7x root 7)R19.1 degrees-S surface: comparison with the corresponding P/Rh(111) surface},
	journal = {Surface Science},
	volume = {393},
	number = {1-3},
	year = {1997},
	note = {ISI Document Delivery No.: YP959Times Cited: 15Cited Reference Count: 35},
	month = {Dec},
	pages = {L119-L125},
	type = {Letter},
	abstract = {The structure of the Pd(lll)-(root 7 x root 7)R19.1<degrees-S surface has been determined by low-energy electron diffraction and has been shown to involve a reconstructed topmost metal layer based on a packed arrangement of Pd pentagons and triangles, with S atoms at 3/7 monolayer coverage occupying eight-coordinate sites at the centre of each Pd pentagon. Comparisons are made with the structure recently determined for the corresponding P/Rh(lll) system. In both cases, the atomic density in the reconstructed layer increases to five metal atoms and three chemisorbed atoms for every seven atoms in the regular metal surface. Some details are closely similar between the two systems, but an intriguing difference is also indicated. In S/Pd(lll), four metal atoms in each pentagonal ring appear close to hcp-type three-fold sites, while the other is close to a fee-type three-fold site. This contrasts with the situation for the topmost layer of the P/Rh(lll) system, for which the reversed lateral registry has been reported (i.e. the atoms of each pentagonal ring occupy three-fold sites where four are of the fee type and one of the hcp type). (C) 1997 Elsevier Science B.V.},
	keywords = {ADSORBATE STRUCTURE, ARRANGEMENT, chemisorption, CRYSTAL SURFACES, CRYSTALLOGRAPHY, ENERGY-ELECTRON-DIFFRACTION, LEED INTENSITY ANALYSIS, low energy electron diffraction crystallography, LOW INDEX SINGLE, METAL-SURFACES, palladium, PD(111) SURFACE, RECONSTRUCTION, SULFUR, sulphur, surface structure},
	isbn = {0039-6028},
	url = {<Go to ISI>://000071333200009},
	author = {Liu, W. and Mitchell, K. A. R. and Berndt, W.}
}
@article {3857,
	title = {Tensor LEED analyses for the (root 3x root 3)R30 degrees and c(4x2) structures formed by sulphur chemisorbed on the (111) surface of rhodium},
	journal = {Surface Science},
	volume = {345},
	number = {1-2},
	year = {1996},
	note = {ISI Document Delivery No.: TT592Times Cited: 17Cited Reference Count: 16},
	month = {Jan},
	pages = {101-109},
	type = {Article},
	abstract = {Tensor LEED analyses have been made for the Rh(111)-(root 3 x root 3)R30 degrees-S and Rh(lll)-c(4 x 2)-S surface structures formed by S chemisorbed at 1/3 and 1/2 monolayer coverages respectively. For the lower-coverage form, S adsorbs on the regular three-coordinate sites which continue the fee packing sequence; the S-Rh bond lengths are indicated to equal 2.23 Angstrom, and relaxations in the metallic structure are negligible. In the c(4 x 2) form, the adsorption occurs equally on both types of three-coordinate site (fee and hcp), although some surface Rh atoms bond to two S atoms while others bond to just one, and this sets up some interesting relaxations. Specifically, the S atoms displace laterally from the centre of the three-fold sites by 0.20 to 0.29 Angstrom, and the first metal layer is buckled by about 0.23 Angstrom. The first-to-second interlayer spacing in the metal expands to 2.26 Angstrom from the bulk value of 2.20 Angstrom. The average S-Rh bond lengths equal 2.22 Angstrom, and so they are not significantly changed from that in the low-coverage form. The structural evolution for S chemisorbed on the (111) surface of rhodium with increasing coverage is compared with the corresponding evolution on the Rh(110) surface.},
	keywords = {ABSORPTION FINE-STRUCTURE, ASSIGNMENT, chalcogens, CRYSTAL SURFACES, HOLLOW ADSORPTION SITE, LOW ENERGY ELECTRON DIFFRACTION (LEED), LOW INDEX SINGLE, NI(111), NO, rhodium, SURFACE RELAXATION},
	isbn = {0039-6028},
	url = {<Go to ISI>://A1996TT59200014},
	author = {Wong, K. C. and Liu, W. and Saidy, M. and Mitchell, K. A. R.}
}
@article {3431,
	title = {STRUCTURAL DETAILS FOR THE CU(110)-C(6X2)-O SURFACE DETERMINED BY TENSOR LEED},
	journal = {Surface Science},
	volume = {339},
	number = {1-2},
	year = {1995},
	note = {ISI Document Delivery No.: RV213Times Cited: 18Cited Reference Count: 28},
	month = {Sep},
	pages = {151-158},
	type = {Article},
	abstract = {A tenser LEED analysis has been made for the Cu(110)-c(6 x 2)-O surface structure using intensity versus energy curves measured for 13 diffracted beams at normal incidence. A good level of correspondence between experimental and calculated intensities has been reached (R(p) = 0.271) for the model type (2/3 monolayer coverage of O) proposed for this surface by Feidenhans{\textquoteright}l et al. This analysis provides direct information on the structural details, and it is indicated that they support the view that the driving force for this structure relates to sufficient O being incorporated in order to stabilize the surface as a modified (211) plane of bulk Cu2O. This structure is composed of double-stranded chains built from 12-membered rings formed by alternating O and Cu atoms. The chains are flattened on the surface, and alternating chains are laterally displaced by half a repeat unit compared with the bulk (211) plane. However, the three-atom O-Cu-O fragments essentially maintain their bulk form in the surface structure. The average O-Cu bond length in Cu(110)-c(6 X 2)-O is indicated to equal 1.90 Angstrom, in exact agreement with the values determined for the half monolayer structures formed by O on Cu(110) and Cu(100).},
	keywords = {copper, CRYSTAL SURFACES, CU, CU(110), ENERGY-ELECTRON-DIFFRACTION, LOW ENERGY ELECTION DIFFRACTION (LEED), LOW INDEX SINGLE, OXYGEN, OXYGEN-CHEMISORPTION, SURFACE RELAXATION AND RECONSTRUCTION, X-RAY-DIFFRACTION},
	isbn = {0039-6028},
	url = {<Go to ISI>://A1995RV21300017},
	author = {Liu, W. and Wong, K. C. and Mitchell, K. A. R.}
}
@article {3559,
	title = {Tensor LEED analysis for the Rh(110)-(3x2)-S surface structure},
	journal = {Surface Science},
	volume = {344},
	number = {3},
	year = {1995},
	note = {ISI Document Delivery No.: TQ239Times Cited: 6Cited Reference Count: 26},
	month = {Dec},
	pages = {258-266},
	type = {Article},
	abstract = {A tensor LEED analysis for the Rh(110)-(3 x 2)-S surface supports an arrangement of chemisorbed S atoms at 2/3 monolayer coverage on a basically unreconstructed metallic structure. Alternating [1(1) over bar0$] channels in the metal surface are occupied differently, although each has two S atoms per unit mesh. In one set, the S atoms occupy long-bridge and centre sites with a constant separation along the channel of 4.03 Angstrom. In the other set of channels, all S atoms occupy equivalent positions, displaced from regular centre sites by 0.39 Angstrom, to give successive S to S separations of 3.47 and 4.60 Angstrom. The long-bridge site bonding is a novel feature which is facilitated by the neighbouring topmost Rh atoms relaxing laterally by about 0.27 Angstrom perpendicular to the [1(1) over bar0$] row. Bucklings of 0.20 and 0.10 Angstrom are indicated to occur in the first and second Rh layers respectively; the latter value essentially equals that (0.11 Angstrom) reported earlier for the corresponding half monolayer c(2 x 2) surface. For S atoms at or near centre sites in the (3 x 2) structure, the average S-Rh bond distances are 2.42 and 2.29 Angstrom to the first and second layer Rh atoms respectively; the corresponding values at the long-bridge sites are 2.20 and 2.27 Angstrom.},
	keywords = {chalcogens, chemisorption, CRYSTAL SURFACES, ENERGY-ELECTRON-DIFFRACTION, GENERAL TRENDS, LOW ENERGY ELECTRON DIFFRACTION (LEED), LOW INDEX SINGLE, rhodium, SULFUR ADSORPTION, SURFACE RELAXATION AND RECONSTRUCTION},
	isbn = {0039-6028},
	url = {<Go to ISI>://A1995TQ23900020},
	author = {Wong, K. C. and Liu, W. and Mitchell, K. A. R.}
}
