R

Radiative lifetime (see Optical properties) Raman scattering, 296, 324, 336-339, 355-361, 363, 370, 376-381, 382, 395-397, 398-402, 485, 511, 643, 699, 717-719, 749, 850, 888, 889 alkali metal species dependence, 376-380, 396, 397

Breit-Wigner-Fano lineshape, 340, 378, 380

broadening by doping, 377, 378, 380, 406,

643, 718 Qo-metal vibration, 718 Cto, 390-392, 397, 718 carbon arc material, 851-854 carbon nanotubes, 756, 768, 797, 799, 839, 841-854

combination modes, 358, 370, 478, 852 cross sections, 846

crystal field effects, 183, 339-341, 378 disorder-induced band, 852-854 doped C^, 376-381, 385, 643, 718 doped Cto, 395, 397, 398 doping-induced mode shifts, 286, 374, 376,

378-380, 385, 395-398, 718, 749 endohedral fullerenes, 229 excited state spectra, 374-375 first-order, 88, 89, 334, 338, 355-358, 365,

481, 850-854 glassy carbon, 25, 851-854 graphite, 17, 42, 851, 853, 854 harmonics, 853

357-361, 365, 478, 850-854 intensity dependence, 375, 395, 397, 406 intermolecular modes, 352, 401, 402 isotope effect, 108, 334, 347, 363-364 Lorentzian lineshape, 372, 375, 378, 400,

401, 852 metal-Cjo multilayers, 570 microprobe, 850

mode displacements, 335-337, 379, 396 oxygen effects, 374 overtones, 358-361, 478 phase transition, 185, 190, 370, 371, 374, 375

phototransformed Qo mode frequencies, 398-402 C7„, 402

polarization effect, 88, 104, 179, 180,

355-356, 378, 392 pressure dependence, 402, 403 pressure-induced phase, 207 Raman active, 211, 215, 332, 338, 849 Ag( 1) (breathing) mode, 336-339,

355-357, 371, 376-380, 396 Ag(2) (pentagonal pinch) mode, 330, 333-336, 338, 339, 356, 357, 364, 365, 371, 374-380, 385, 386, 396, 398, 399, 403, 406, 718, 749 Hg modes, 330, 333-335, 338, 339, 356, 357, 359, 370, 371, 376-380, 406, 643

resonant enhancement, 380 selection rules, 88, 89, 104, 179, 180, 182, 332, 357, 359, 360, 363, 400, 706, 797, 799

solution spectrum, 363, 364 splittings, 340, 341, 370, 372, 378 surface-induced shifts, 718 symmetry lowering at surface, 718 TDAE-Qo, 405, 406, 749 TDAE-C70, 406

temperature dependence, 364, 370-372, 374, 398, 400-402, 406 Rare earth dopants, 231, 232, 234, 241, 256,

742-743 Rare gas, 232

Ratchet motion (see Rotation of fullerenes) RbjQo (see Alkali metal fullerides) Reactions (see Chemical reactions) Reactive site, 292 Reactivity, 294 Rectification, 884-886 I-V characteristics, 884-886 sign, 884

Recombination (see also Photoconductivity),

897 Relaxation between potential minima, 597 excited state, 541 magnetic, 752 molecular, 189-192 rates, 674

spin (see Spin-lattice relaxation) structural, 229, 535, 597 Reorientation time, 658, 659, 723

Resistivity (see also Transport properties), 247, 248, 261, 286, 385, 498, 521, 528, 531, 557-573 carbon nanotubes (see Transport properties) maximum, 563

minimum, 286, 385, 395, 445, 558 residual, 245, 246, 561 sign of dp/dT, 560-562, 565 Rhombohedral structure CmS8CS2, 236, 237

pressure induced rh(pC60), 206, 207, 403, 404

Ring currents, 739-742, 745 Ring of carbon atoms, 4, 44-46, 144, 149, 151, 167

Rock salt structure, 226, 242, 247, 248, 380, 531

Rotation of fullerenes (see also Phase transitions), 173, 597, 683, 692, 712, 714, 723, 731, 732, 749, 750 axis, 185, 200, 202, 660, 661 freezing of motion, 185, 188, 189,

191-193, 669 hindered, 184, 189, 259, 329, 354, 657, 749 isotropic, 184, 185, 661 period, 173

ratchet-type, 174, 185, 188, 189, 192, 193, 200, 202, 258, 354, 371, 373, 597, 658, 659, 662 uniaxial, 184, 661 Rotational energy levels, 341-343, 594 Rotation group basis functions, 82-84 spherical harmonics, 82, 83, 100 Rotational potential, 388 Rotational spectra, 342-347, 348 fine structure, 343-346 hyperfine structure, 344, 345 superfine structure, 344-346 Rubidium (see also Alkali metal fullerides), 559

Rutherford back-scattering (RBS), 558, 567, 569

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