Rotational Sublevels of an Ortho-Hydrogen Molecule Encapsulated in an Isotropic C60 Cage

被引：42

作者：

Kohama, Yoshimitsu ^{[1
]}

Rachi, Takeshi ^{[2
]}

Jing, Ju ^{[2
]}

Li, Zhaofei ^{[2
]}

Tang, Jun ^{[2
]}

Kumashiro, Ryotaro ^{[2
]}

Izumisawa, Satoru ^{[1
]}

Kawaji, Hitoshi ^{[1
]}

Atake, Tooru ^{[1
]}

Sawa, Hiroshi ^{[3
]}

Murata, Yasujiro ^{[4
]}

Komatsu, Koichi ^{[5
]}

Tanigaki, Katsumi ^{[2
]}

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[2] Tohoku Univ, Dept Phys, Aoba Ku, Sendai, Miyagi 9808578, Japan

[3] Nagoya Univ, Dept Appl Phys, Chidane Ku, Nagoya, Aichi 4648603, Japan

[4] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[5] Fukui Univ Technol, Fukui 9108505, Japan

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 07期

基金：

日本学术振兴会;

关键词：

FULLERENE C-60; PHASE;

D O I：

10.1103/PhysRevLett.103.073001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

From specific heat measurements in high quality H-2@C-60 samples performed over a broad temperature range, we obtain the smallest yet observed splitting of rotational energy sublevels of encapsulated single H-2 molecules, 0.1-0.2 meV, in the nearly spherical potential well provided by highly isotropic C-60 cages. Additionally, we find evidence of the quantized oscillation state of isolated H-2 in the C-60 cage. The minuscule splitting indicates that H-2@C-60 provides unprecedented opportunities to study free-molecule quantum dynamic properties.

引用

页数：4

共 16 条

[1] HEAT-CAPACITY MEASUREMENTS AND THERMODYNAMIC STUDIES OF THE NEW COMPOUND-C-6(0) [J].

ATAKE, T ;

TANAKA, T ;

KAWAJI, H ;

KIKUCHI, K ;

SAITO, K ;

SUZUKI, S ;

IKEMOTO, I ;

ACHIBA, Y .

PHYSICA C, 1991, 185 :427-428

[2] Cryogenic NMR spectroscopy of endohedral hydrogen-fullerene complexes [J].

Carravetta, M ;

Johannessen, OG ;

Levitt, MH ;

Heinmaa, I ;

Stern, R ;

Samoson, A ;

Horsewill, AJ ;

Murata, Y ;

Komatsu, K .

JOURNAL OF CHEMICAL PHYSICS, 2006, 124 (10)

[3] STRUCTURAL PHASE-TRANSITIONS IN THE FULLERENE C-60 [J].

DAVID, WIF ;

IBBERSON, RM ;

DENNIS, TJS ;

HARE, JP ;

PRASSIDES, K .

EUROPHYSICS LETTERS, 1992, 18 (03) :219-225

[4] Quantum dynamics of interstitial H2 in solid C60 [J].

FitzGerald, SA ;

Yildirim, T ;

Santodonato, LJ ;

Neumann, DA ;

Copley, JRD ;

Rush, JJ ;

Trouw, F .

PHYSICAL REVIEW B, 1999, 60 (09) :6439-6451

[5]

Gopal E., 2012, SPECIFIC HEATS LOW T

[6] Einstein oscillators in thallium filled antimony skutterudites [J].

Hermann, RP ;

Jin, RJ ;

Schweika, W ;

Grandjean, F ;

Mandrus, D ;

Sales, BC ;

Long, GJ .

PHYSICAL REVIEW LETTERS, 2003, 90 (13) :135505/1-135505/4

[7] Quantum Translator-Rotator: Inelastic Neutron Scattering of Dihydrogen Molecules Trapped inside Anisotropic Fullerene Cages [J].

Horsewill, A. J. ;

Panesar, K. S. ;

Rols, S. ;

Johnson, M. R. ;

Murata, Y. ;

Komatsu, K. ;

Mamone, S. ;

Danquigny, A. ;

Cuda, F. ;

Maltsev, S. ;

Grossel, M. C. ;

Carravetta, M. ;

Levitt, M. H. .

PHYSICAL REVIEW LETTERS, 2009, 102 (01)

[8] Localized vibrational modes in metallic solids [J].

Keppens, V ;

Mandrus, D ;

Sales, BC ;

Chakoumakos, BC ;

Dai, P ;

Coldea, R ;

Maple, MB ;

Gajewski, DA ;

Freeman, EJ ;

Bennington, S .

NATURE, 1998, 395 (6705) :876-878

[9] Encapsulation of molecular hydrogen in fullerene C 60 by organic synthesis [J].

Komatsu, K ;

Murata, M ;

Murata, Y .

SCIENCE, 2005, 307 (5707) :238-240

[10] Optical studies of solid hydrogen to 320 GPa and evidence for black hydrogen [J].

Loubeyre, P ;

Occelli, F ;

LeToullec, R .

NATURE, 2002, 416 (6881) :613-617

← 1 2 →