Abstract
Efforts to identify and develop new superconducting materials continue apace, motivated by both fundamental science and the prospects for application. For example, several new superconducting material systems have been developed in the recent past, including calcium-intercalated graphite compounds, boron-doped diamond and-most prominentlyg-iron arsenides such as LaO1-x F x FeAs (ref. 3). In the case of organic superconductors, however, no new material system with a high superconducting transition temperature (Tc) has been discovered in the past decade. Here we report that intercalating an alkali metal into picene, a wide-bandgap semiconducting solid hydrocarbon, produces metallic behaviour and superconductivity. Solid potassium-intercalated picene (Kx picene) shows Tc values of 7 K and 18 K, depending on the metal content. The drop of magnetization in K x picene solids at the transition temperature is sharp (c of 18 K is comparable to that of K-intercalated C60 (ref. 4). This discovery of superconductivity in K x picene shows that organic hydrocarbons are promising candidates for improved Tc values.
| Original language | English |
|---|---|
| Pages (from-to) | 76-79 |
| Number of pages | 4 |
| Journal | Nature |
| Volume | 464 |
| Issue number | 7285 |
| DOIs | |
| Publication status | Published - 2010 |
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Superconductivity in alkali-metal-doped picene. / Mitsuhashi, Ryoji; Suzuki, Yuta; Yamanari, Yusuke; Mitamura, Hiroki; Kambe, Takashi; Ikeda, Naoshi; Okamoto, Hideki; Fujiwara, Akihiko; Yamaji, Minoru; Kawasaki, Naoko; Maniwa, Yutaka; Kubozono, Yoshihiro.
In: Nature, Vol. 464, No. 7285, 2010, p. 76-79.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superconductivity in alkali-metal-doped picene
AU - Mitsuhashi, Ryoji
AU - Suzuki, Yuta
AU - Yamanari, Yusuke
AU - Mitamura, Hiroki
AU - Kambe, Takashi
AU - Ikeda, Naoshi
AU - Okamoto, Hideki
AU - Fujiwara, Akihiko
AU - Yamaji, Minoru
AU - Kawasaki, Naoko
AU - Maniwa, Yutaka
AU - Kubozono, Yoshihiro
PY - 2010
Y1 - 2010
N2 - Efforts to identify and develop new superconducting materials continue apace, motivated by both fundamental science and the prospects for application. For example, several new superconducting material systems have been developed in the recent past, including calcium-intercalated graphite compounds, boron-doped diamond and-most prominentlyg-iron arsenides such as LaO1-x F x FeAs (ref. 3). In the case of organic superconductors, however, no new material system with a high superconducting transition temperature (Tc) has been discovered in the past decade. Here we report that intercalating an alkali metal into picene, a wide-bandgap semiconducting solid hydrocarbon, produces metallic behaviour and superconductivity. Solid potassium-intercalated picene (Kx picene) shows Tc values of 7 K and 18 K, depending on the metal content. The drop of magnetization in K x picene solids at the transition temperature is sharp (c of 18 K is comparable to that of K-intercalated C60 (ref. 4). This discovery of superconductivity in K x picene shows that organic hydrocarbons are promising candidates for improved Tc values.
AB - Efforts to identify and develop new superconducting materials continue apace, motivated by both fundamental science and the prospects for application. For example, several new superconducting material systems have been developed in the recent past, including calcium-intercalated graphite compounds, boron-doped diamond and-most prominentlyg-iron arsenides such as LaO1-x F x FeAs (ref. 3). In the case of organic superconductors, however, no new material system with a high superconducting transition temperature (Tc) has been discovered in the past decade. Here we report that intercalating an alkali metal into picene, a wide-bandgap semiconducting solid hydrocarbon, produces metallic behaviour and superconductivity. Solid potassium-intercalated picene (Kx picene) shows Tc values of 7 K and 18 K, depending on the metal content. The drop of magnetization in K x picene solids at the transition temperature is sharp (c of 18 K is comparable to that of K-intercalated C60 (ref. 4). This discovery of superconductivity in K x picene shows that organic hydrocarbons are promising candidates for improved Tc values.
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U2 - 10.1038/nature08859
DO - 10.1038/nature08859
M3 - Article
VL - 464
SP - 76
EP - 79
JO - Nature
JF - Nature
SN - 0028-0836
IS - 7285
ER -