[ital In] [ital situ] infrared transmission study of Rb- and K-doped fullerenes
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794-3800 (United States)
We have measured the four IR-active C[sub 60] molecular vibrations in [ital M][sub [ital x]]C[sub 60] ([ital M]= K,Rb) as a function of doping [ital x]. We observe discontinuous changes in the vibrational spectra showing four distinct phases (presumably [ital x]=0,3,4, and 6). The 1427-cm[sup [minus]1] and 576-cm[sup [minus]1] modes show the largest changes shifting downward in frequency in four steps as the doping increases. Several very weak modes are visible in the [ital x]=6 phase and are possibly Raman modes becoming weakly optically active. We present quantitative fits of data and calculate the electron-phonon coupling of the 1427-cm[sup [minus]1] IR mode.
- OSTI ID:
- 5577501
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 47:21; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Raman-active phonons in Bi{sub 2}Sr{sub 2}Ca{sub 1{minus}{ital x}}Y{sub {ital x}}Cu{sub 2}O{sub 8+{ital d}} ({ital x}=0{endash}1): Effects of hole filling and internal pressure induced by Y doping for Ca, and implications for phonon assignments
Infrared-absorption and photoinduced-absorption spectroscopy of semiconducting YBa sub 2 Cu sub 3 sup A O sub 6+ x ( A =16 and 18; 0 le x le 0. 3)
Raman studies of alkali-metal doped A sub x C sub 60 films (A = Na, K, Rb, and Cs; x = 0, 3, and 6)
Journal Article
·
Wed May 01 00:00:00 EDT 1996
· Physical Review, B: Condensed Matter
·
OSTI ID:283889
Infrared-absorption and photoinduced-absorption spectroscopy of semiconducting YBa sub 2 Cu sub 3 sup A O sub 6+ x ( A =16 and 18; 0 le x le 0. 3)
Journal Article
·
Wed May 01 00:00:00 EDT 1991
· Physical Review, B: Condensed Matter; (USA)
·
OSTI ID:5490478
Raman studies of alkali-metal doped A sub x C sub 60 films (A = Na, K, Rb, and Cs; x = 0, 3, and 6)
Journal Article
·
Thu Dec 12 23:00:00 EST 1991
· Science (Washington, D.C.); (United States)
·
OSTI ID:7305994
Related Subjects
36 MATERIALS SCIENCE
360607* -- Other Materials-- Superconducting Properties-- (1992-)
ALLOYS
CARBON
COUPLING
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ELEMENTS
FULLERENES
INFRARED SPECTRA
INTERMOLECULAR FORCES
LIGHT TRANSMISSION
NONMETALS
PHYSICAL PROPERTIES
POTASSIUM ADDITIONS
POTASSIUM ALLOYS
RUBIDIUM ADDITIONS
RUBIDIUM ALLOYS
SPECTRA
SUBSTOICHIOMETRY
SUPERCONDUCTIVITY
360607* -- Other Materials-- Superconducting Properties-- (1992-)
ALLOYS
CARBON
COUPLING
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ELEMENTS
FULLERENES
INFRARED SPECTRA
INTERMOLECULAR FORCES
LIGHT TRANSMISSION
NONMETALS
PHYSICAL PROPERTIES
POTASSIUM ADDITIONS
POTASSIUM ALLOYS
RUBIDIUM ADDITIONS
RUBIDIUM ALLOYS
SPECTRA
SUBSTOICHIOMETRY
SUPERCONDUCTIVITY