Rotational sublevels of an ortho-hydrogen molecule encapsulated in an isotropic C60 cage

Yoshimitsu Kohama, Takeshi Rachi, Ju Jing, Zhaofei Li, Jun Tang, Ryotaro Kumashiro, Satoru Izumisawa, Hitoshi Kawaji, Tooru Atake, Hiroshi Sawa, Yasujiro Murata, Koichi Komatsu, Katsumi Tanigaki

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

From specific heat measurements in high quality H2@C60 samples performed over a broad temperature range, we obtain the smallest yet observed splitting of rotational energy sublevels of encapsulated single H2 molecules, 0.1-0.2 meV, in the nearly spherical potential well provided by highly isotropic C60 cages. Additionally, we find evidence of the quantized oscillation state of isolated H2 in the C60 cage. The minuscule splitting indicates that H2@C60 provides unprecedented opportunities to study free-molecule quantum dynamic properties.

Original languageEnglish
Article number073001
JournalPhysical review letters
Volume103
Issue number7
DOIs
Publication statusPublished - 2009 Aug 12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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