Giant vibrational resonances in A6C60 compounds

Ke Jian Fu; William L. Karney; Orville L. Chapman; Shiou Mei Huang; Richard B. Kaner; François Diederich; Kroly Holczer; Robert L. Whetten

doi:10.1103/PhysRevB.46.1937

Giant vibrational resonances in A6C60 compounds

Ke Jian Fu, William L. Karney, Orville L. Chapman, Shiou Mei Huang, Richard B. Kaner, François Diederich, Kroly Holczer, Robert L. Whetten

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Abstract

Formation of alkali-C60 compounds AnC60(A=K, Rb) induces very large enhancements in the optical strength of two intra-C60 vibrational resonances and the emergence of a strong electronic transition centered at 1.2 eV. The vibrational spectra are particularly well defined for the A6C60 semiconductor compounds, and it is proposed that the ca. ninetyfold enhancement of the 1428-cm-1 mode and its large shift (to 1342 cm-1) are generated by coupling to electronic excitations located on the molecule, consistent with recent theoretical descriptions of C606- and the ionic solid bcc-A6+C606-.

Original language	English (US)
Pages (from-to)	1937-1940
Number of pages	4
Journal	Physical Review B
Volume	46
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.46.1937
State	Published - 1992
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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10.1103/PhysRevB.46.1937

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title = "Giant vibrational resonances in A6C60 compounds",

abstract = "Formation of alkali-C60 compounds AnC60(A=K, Rb) induces very large enhancements in the optical strength of two intra-C60 vibrational resonances and the emergence of a strong electronic transition centered at 1.2 eV. The vibrational spectra are particularly well defined for the A6C60 semiconductor compounds, and it is proposed that the ca. ninetyfold enhancement of the 1428-cm-1 mode and its large shift (to 1342 cm-1) are generated by coupling to electronic excitations located on the molecule, consistent with recent theoretical descriptions of C606- and the ionic solid bcc-A6+C606-.",

author = "Fu, {Ke Jian} and Karney, {William L.} and Chapman, {Orville L.} and Huang, {Shiou Mei} and Kaner, {Richard B.} and Fran{\c c}ois Diederich and Kroly Holczer and Whetten, {Robert L.}",

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T1 - Giant vibrational resonances in A6C60 compounds

AU - Fu, Ke Jian

AU - Karney, William L.

AU - Chapman, Orville L.

AU - Huang, Shiou Mei

AU - Kaner, Richard B.

AU - Diederich, François

AU - Holczer, Kroly

AU - Whetten, Robert L.

PY - 1992

Y1 - 1992

N2 - Formation of alkali-C60 compounds AnC60(A=K, Rb) induces very large enhancements in the optical strength of two intra-C60 vibrational resonances and the emergence of a strong electronic transition centered at 1.2 eV. The vibrational spectra are particularly well defined for the A6C60 semiconductor compounds, and it is proposed that the ca. ninetyfold enhancement of the 1428-cm-1 mode and its large shift (to 1342 cm-1) are generated by coupling to electronic excitations located on the molecule, consistent with recent theoretical descriptions of C606- and the ionic solid bcc-A6+C606-.

AB - Formation of alkali-C60 compounds AnC60(A=K, Rb) induces very large enhancements in the optical strength of two intra-C60 vibrational resonances and the emergence of a strong electronic transition centered at 1.2 eV. The vibrational spectra are particularly well defined for the A6C60 semiconductor compounds, and it is proposed that the ca. ninetyfold enhancement of the 1428-cm-1 mode and its large shift (to 1342 cm-1) are generated by coupling to electronic excitations located on the molecule, consistent with recent theoretical descriptions of C606- and the ionic solid bcc-A6+C606-.

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Giant vibrational resonances in A6C60 compounds

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