Self-organized two-dimensional lattice of magic clusters

by: MY Lai, YL Wang

Physical Review B, Vol. 64, No. 24. (3 December 2001), 241404.

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Abstract

Under certain deposition conditions; gallium induces almost exclusive formation of a type of especially stable clustersâmagic clusters; on the 7Ã7-reconstructed silicon(111) surface. The cluster has a triangular closed-shell structure and resides on the center of a 7Ã7 half unit-cell. As the gallium coverage is increased; the cluster density increases proportionally; leading essentially to the complete filling of the 7Ã7 half unit-cells and the creation of an unprecedented two-dimensional lattice of magic clusters. A structure model employing three silicon atoms to link six gallium atoms into a configuration with satisfied bonding is proposed to qualitatively account for the clusterâs stability.

@article{citeulike:772002, abstract = {Under certain deposition conditions; gallium induces almost exclusive formation of a type of especially stable clusters\^{a}magic clusters; on the 7\~{A}7-reconstructed silicon(111) surface. The cluster has a triangular closed-shell structure and resides on the center of a 7\~{A}7 half unit-cell. As the gallium coverage is increased; the cluster density increases proportionally; leading essentially to the complete filling of the 7\~{A}7 half unit-cells and the creation of an unprecedented two-dimensional lattice of magic clusters. A structure model employing three silicon atoms to link six gallium atoms into a configuration with satisfied bonding is proposed to qualitatively account for the cluster\^{a}s stability.}, author = {Lai, M. Y. and Wang, Y. L. }, citeulike-article-id = {772002}, doi = {10.1103/PhysRevB.64.241404}, journal = {Physical Review B}, keywords = {clusters, si-7x7}, month = {December}, number = {24}, pages = {241404+}, posted-at = {2006-07-25 09:49:13}, priority = {2}, publisher = {American Physical Society}, title = {Self-organized two-dimensional lattice of magic clusters}, url = {http://dx.doi.org/10.1103/PhysRevB.64.241404}, volume = {64}, year = {2001} }

RIS record

TY - JOUR ID - citeulike:772002 L3 - citeulike-article-id:772002 TI - Self-organized two-dimensional lattice of magic clusters JF - Physical Review B VL - 64 IS - 24 SP - 241404 PB - American Physical Society N2 - Under certain deposition conditions; gallium induces almost exclusive formation of a type of especially stable clustersâmagic clusters; on the 7Ã7-reconstructed silicon(111) surface. The cluster has a triangular closed-shell structure and resides on the center of a 7Ã7 half unit-cell. As the gallium coverage is increased; the cluster density increases proportionally; leading essentially to the complete filling of the 7Ã7 half unit-cells and the creation of an unprecedented two-dimensional lattice of magic clusters. A structure model employing three silicon atoms to link six gallium atoms into a configuration with satisfied bonding is proposed to qualitatively account for the clusterâs stability. KW - clusters KW - si-7x7 AU - Lai, MY AU - Wang, YL PY - 2001/12/03/ UR - http://dx.doi.org/10.1103/PhysRevB.64.241404 ER -

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