Abstract
Intercalated fullerides A3C60 (A = K and Rb) are well known BCS-type superconductors, but their superconductivity is easily destroyed by subtle chemical modification, resulting in the antiferromagnetically ordered states. This property is suggestive of the importance of electron correlation effect. Using microwave cavity perturbation technique, we found that the conductivity at 250 K of the antiferromagnet compounds is already 3-4 orders of magnitude smaller than those of superconducting compounds. These results strongly suggest that the Mott-Hubbard transition in the A3C60 systems is driven by reduction of lattice symmetry.
| Original language | English |
|---|---|
| Pages (from-to) | 615-616 |
| Number of pages | 2 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 388-389 |
| DOIs | |
| Publication status | Published - 2003 May |
| Externally published | Yes |
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Keywords
- Antiferromagnetic insulator
- Fullerides
- Mott-Jahn Teller system
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Metal-insulator transition in C60 fullerides. / Iwasa, Y.; Takenobu, T.; Kitano, H.; Maeda, A.
In: Physica C: Superconductivity and its Applications, Vol. 388-389, 05.2003, p. 615-616.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Metal-insulator transition in C60 fullerides
AU - Iwasa, Y.
AU - Takenobu, T.
AU - Kitano, H.
AU - Maeda, A.
PY - 2003/5
Y1 - 2003/5
N2 - Intercalated fullerides A3C60 (A = K and Rb) are well known BCS-type superconductors, but their superconductivity is easily destroyed by subtle chemical modification, resulting in the antiferromagnetically ordered states. This property is suggestive of the importance of electron correlation effect. Using microwave cavity perturbation technique, we found that the conductivity at 250 K of the antiferromagnet compounds is already 3-4 orders of magnitude smaller than those of superconducting compounds. These results strongly suggest that the Mott-Hubbard transition in the A3C60 systems is driven by reduction of lattice symmetry.
AB - Intercalated fullerides A3C60 (A = K and Rb) are well known BCS-type superconductors, but their superconductivity is easily destroyed by subtle chemical modification, resulting in the antiferromagnetically ordered states. This property is suggestive of the importance of electron correlation effect. Using microwave cavity perturbation technique, we found that the conductivity at 250 K of the antiferromagnet compounds is already 3-4 orders of magnitude smaller than those of superconducting compounds. These results strongly suggest that the Mott-Hubbard transition in the A3C60 systems is driven by reduction of lattice symmetry.
KW - Antiferromagnetic insulator
KW - Fullerides
KW - Mott-Jahn Teller system
UR - http://www.scopus.com/inward/record.url?scp=0038476557&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0038476557&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(02)02767-3
DO - 10.1016/S0921-4534(02)02767-3
M3 - Article
AN - SCOPUS:0038476557
VL - 388-389
SP - 615
EP - 616
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
ER -