Table 3.

The obtained values of the energy of HOMO/LUMO boundary orbitals and the energy gap in the intensity of different electric fields (All values are in eV).

Field strength (10−4 a.u.)	Au-A-Au				Au-B-Au
	LUMO	HOMO	HLG	LUMO	HOMO	HLG
0	− 2.69	− 7.01	4.32	− 2.76	− 6.74	3.98
20	− 2.93	− 6.98	4.05	− 2.76	− 6.25	3.49
40	− 3.19	− 6.94	3.74	− 3.35	− 5.80	2.45
60	− 3.53	− 6.81	3.28	− 3.53	− 5.54	2.01
80	− 3.80	− 6.75	2.94	− 3.74	− 5.59	1.85
100	− 4.08	− 6.68	2.60	− 4.16	− 5.79	1.63