The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm excitation shows only a single peak in the region of the 1468 cm-1 out-of-phase ring mode. For higher irradiances a new broad peak appears in the spectrum at a somewhat lower frequency. Simultaneously, an increase of the luminescence is observed. As the irradiance increases the new peak gains intensity and shifts to lower frequencies, whereas the original peak slowly disappears. It is argued that this peak originates from electronically excited C60. A simple electronic four-level model is proposed to explain the observed effects.
The excited state properties of C60 thin films have been probed in the temperature range 77-273K usi...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
The low-temperature Raman spectrum of 2a0-fcc single crystal C60 recorded using low-irradiance 514 n...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
Raman spectra of purified C60 single crystals are measured over a wide temperature range. It is foun...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
The excited state properties of C60 thin films have been probed in the temperature range 77-273K usi...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
The excited state properties of C60 thin films have been probed in the temperature range 77-273K usi...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
The low-temperature Raman spectrum of 2a0-fcc single crystal C60 recorded using low-irradiance 514 n...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
The low-temperature Raman spectrum of 2a0fcc single crystal C60 recorded using low-irradiance 514 nm...
Raman spectra of purified C60 single crystals are measured over a wide temperature range. It is foun...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
The excited state properties of C60 thin films have been probed in the temperature range 77-273K usi...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
The excited state properties of C60 thin films have been probed in the temperature range 77-273K usi...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...
Raman spectra (using 514 and 740 nm excitation) of high-purity single crystal C60 are presented for ...