Beilstein J. Nanotechnol.2017,8, 2484–2491, doi:10.3762/bjnano.8.248
The adsorption of the irontetraphenylporphyrin (FeTPP) molecule in its deckchair conformation was investigated on Au(111), Ag(111) and Cu(111) surfaces by performing spin-polarized density functional theory (DFT) calculations taking into account both van der Waals (vdW) interaction and on-site
spin switches.
Keywords: activation barrier; density functional theory; irontetraphenylporphyrin; spin switch; spin states; Introduction
Porphyrins, phthalocyanines and their transition-metal (TM) complexes are largely investigated in surface science as reported in detail by Gottfried [1]. The
these complexes, irontetraphenylporphyrin (FeTPP) is particularly attractive for molecular spintronics due to its magnetic bistability. Indeed, the Fe2+ centre (4s03d6) can have three magnetic states, i.e., low-spin state (LS, S = 0), intermediate state (IS, S = 1) and high-spin state (HS, S = 2
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Figure 1:
Low-symmetry FeTPP conformations: a) ideal (D4h); b) saddle (D2d); c) twist (S4); d) deckchair (C2h...