Ground state properties of one-dimensional chain of oxygen molecules an stu
died by an exact diagonalization procedure for 1D two band Hubbard Hamilton
ian. Effects of the transfer energy and the orbital energy difference on th
e magnetic properties are studied in detail and it is suggested that peculi
ar magnetic properties of oxygen physisorbed in Cu-trans-1,4-cyclohexanedic
arboxylic acid may be explained by taking into account the effect of the or
bital energy difference. (C) 1999 Elsevier Science B.V. All rights reserved
.