Abstract
Raman spectra have been studied on two kinds of highly doped fullerides of AxBa3C60 (x=0,3;A=K, Rb) and KxSm2.75C60 (x=0,3.25). It was found that the Raman spectra are essentially identical to each other for all ternary fullerides. The results show a crossover point at the boundary of t1u and t1g bands for the charge-transfer dependence of Raman shift. Particularly, the totally symmetric Ag(2) mode in t1g fullerides cannot be understood by a simple extrapolation from the low-doped t1u fullerides, where the Ag(2) mode follows a characteristic shift of ∼6.3 cm-1 per elementary charge. The present result shows that the Raman spectra of t1g states cannot be explained only by charge transfer.
| Original language | English |
|---|---|
| Pages (from-to) | 12462-12466 |
| Number of pages | 5 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 60 |
| Issue number | 17 |
| Publication status | Published - 1999 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Anomalous Raman shift in the ternary fullerides with t1g states. / Chen, X. H.; Takenobu, T.; Muro, T.; Fudo, H.; Iwasa, Y.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 60, No. 17, 1999, p. 12462-12466.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anomalous Raman shift in the ternary fullerides with t1g states
AU - Chen, X. H.
AU - Takenobu, T.
AU - Muro, T.
AU - Fudo, H.
AU - Iwasa, Y.
PY - 1999
Y1 - 1999
N2 - Raman spectra have been studied on two kinds of highly doped fullerides of AxBa3C60 (x=0,3;A=K, Rb) and KxSm2.75C60 (x=0,3.25). It was found that the Raman spectra are essentially identical to each other for all ternary fullerides. The results show a crossover point at the boundary of t1u and t1g bands for the charge-transfer dependence of Raman shift. Particularly, the totally symmetric Ag(2) mode in t1g fullerides cannot be understood by a simple extrapolation from the low-doped t1u fullerides, where the Ag(2) mode follows a characteristic shift of ∼6.3 cm-1 per elementary charge. The present result shows that the Raman spectra of t1g states cannot be explained only by charge transfer.
AB - Raman spectra have been studied on two kinds of highly doped fullerides of AxBa3C60 (x=0,3;A=K, Rb) and KxSm2.75C60 (x=0,3.25). It was found that the Raman spectra are essentially identical to each other for all ternary fullerides. The results show a crossover point at the boundary of t1u and t1g bands for the charge-transfer dependence of Raman shift. Particularly, the totally symmetric Ag(2) mode in t1g fullerides cannot be understood by a simple extrapolation from the low-doped t1u fullerides, where the Ag(2) mode follows a characteristic shift of ∼6.3 cm-1 per elementary charge. The present result shows that the Raman spectra of t1g states cannot be explained only by charge transfer.
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UR - http://www.scopus.com/inward/citedby.url?scp=0000759501&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0000759501
VL - 60
SP - 12462
EP - 12466
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 17
ER -