Table 3.10: The structural parameters for the relaxed T_4-model surfaces of Ge{111}rt3*rt3-30-X, as determined by a Keating analysis.

Table 3.10: The structural parameters for the relaxed T_4-model surfaces of Ge{111}rt3*rt3-30-X, as determined by a Keating analysis.
The tetrahedral covalent radii for C, B, Si, Ge, Al, Ga, Sn, In, and Pb are 0.77, 0.88, 1.18, 1.22, 1.26, 1.26, 1.40, 1.44, and 1.46 Ang., respectively.
The parameter increment is 0.008 Ang.

Parameter R_X=0.98 (Ang.) 1.08 1.18 1.28 1.38 1.48

Delta z_X (0 ) (Ang.) -0.168 +0.040 +0.224 +0.392 +0.568 +0.720

Delta z_Ge(1 ) -0.056 -0.048 -0.048 -0.040 -0.032 -0.032

Delta r_Ge(1 ) -0.184 -0.168 -0.152 -0.136 -0.128 -0.120

Delta z_Ge(2a) -0.400 -0.376 -0.360 -0.328 -0.312 -0.312

Delta z_Ge(2b) +0.152 +0.144 +0.136 +0.128 +0.128 +0.128

Delta z_Ge(3a) -0.384 -0.360 -0.344 -0.312 -0.304 -0.304

Delta z_Ge(3b) +0.136 +0.128 +0.120 +0.112 +0.112 +0.112

Delta r_Ge(4 ) +0.096 +0.088 +0.088 +0.080 +0.080 +0.080

Parameter	R_X=0.98 (Ang.)	1.08	1.18	1.28	1.38	1.48


Delta z_X (0 ) (Ang.)	-0.168	+0.040	+0.224	+0.392	+0.568	+0.720
Delta z_Ge(1 )	-0.056	-0.048	-0.048	-0.040	-0.032	-0.032
Delta r_Ge(1 )	-0.184	-0.168	-0.152	-0.136	-0.128	-0.120
Delta z_Ge(2a)	-0.400	-0.376	-0.360	-0.328	-0.312	-0.312
Delta z_Ge(2b)	+0.152	+0.144	+0.136	+0.128	+0.128	+0.128
Delta z_Ge(3a)	-0.384	-0.360	-0.344	-0.312	-0.304	-0.304
Delta z_Ge(3b)	+0.136	+0.128	+0.120	+0.112	+0.112	+0.112
Delta r_Ge(4 )	+0.096	+0.088	+0.088	+0.080	+0.080	+0.080

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Last Update: 6/21/96