title: Localised quantum states of atomic and molecular particles physisorbed on carbon-based nanoparticles.
abstract: The vibrational states of atomic and molecular particles adsorbed on long linear nanographenes are described using reliable theoretical potentials and appropriate vibrational (lateral) Hamiltonians. Although they rigorously obey the Bloch theorem only for infinite nanographenes, the energy patterns of the probed states closely resemble the usual Bloch bands and gaps. In addition, for any finite nanographene, these patterns are enriched by the presence of "solitary" energy levels and the "resonance" structure of the bands. While typical band states are profoundly delocalised due to a fast tunneling of the adsorbed particle, the "solitary" and "resonance" states exhibit strong localisation, similar to the behaviour of the states of the Wannier-Stark ladders in optical and semiconductor superlattices.
authors.affiliation: Department of Radiation and Chemical Physics, Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic.
authors.forename: Petra Ruth
authors.initials: PR
authors.lastname: Kaprálová-Žďánská
authors.affiliation: Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, CZ-16610 Prague 6, Czech Republic.
authors.forename: Michal
authors.initials: M
authors.lastname: Trachta
authors.affiliation: Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, CZ-16610 Prague 6, Czech Republic.
authors.forename: Ota
authors.initials: O
authors.lastname: Bludský
authors.affiliation: Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, CZ-16610 Prague 6, Czech Republic.
authors.forename: Vladimír
authors.initials: V
authors.lastname: Špirko