Superconductivity in an inorganic electride 12CaO·7Al 2O3:e-

Masashi Miyakawa; Wng Kim Sung; Masahiro Hirano; Yoshimitsu Kohama; Hitoshi Kawaji; Tooru Atake; Hiroki Ikegami; Kimitoshi Kono; Hideo Hosono

doi:10.1021/ja0724644

Superconductivity in an inorganic electride 12CaO·7Al ₂O₃:e^-

Masashi Miyakawa
, Wng Kim Sung
, Masahiro Hirano
, Yoshimitsu Kohama
, Hitoshi Kawaji
, Tooru Atake
, Hiroki Ikegami
, Kimitoshi Kono
, Hideo Hosono

Research output: Contribution to journal › Article › peer-review

231 Scopus citations

Abstract

An inorganic electride, 12CaO·7Al₂O₃:e-, synthesized by exclusively replacing oxygen ions in the sub-nanometer-sized cages of 12CaO·7Al₂O₃ crystal with electrons exhibits a superconducting transition at a temperature (T_c) of 0.4 K. T_c varies in the range of 0.14-0.4 K with the concentration of anionic electrons, which are primarily distributed over crystallographic spaces without occupying any particular framework ions. The precursor of electride is composed of representative metal oxides, which are electrical insulators. Thus, the exotic crystal structure of electrides provides an insight for a material platform to realize a new superconductor.

Original language	English
Pages (from-to)	7270-7271
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	129
Issue number	23
DOIs	https://doi.org/10.1021/ja0724644
State	Published - 13 Jun 2007
Externally published	Yes

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title = "Superconductivity in an inorganic electride 12CaO·7Al 2O3:e-",

abstract = "An inorganic electride, 12CaO·7Al2O3:e-, synthesized by exclusively replacing oxygen ions in the sub-nanometer-sized cages of 12CaO·7Al2O3 crystal with electrons exhibits a superconducting transition at a temperature (Tc) of 0.4 K. Tc varies in the range of 0.14-0.4 K with the concentration of anionic electrons, which are primarily distributed over crystallographic spaces without occupying any particular framework ions. The precursor of electride is composed of representative metal oxides, which are electrical insulators. Thus, the exotic crystal structure of electrides provides an insight for a material platform to realize a new superconductor.",

author = "Masashi Miyakawa and Sung, \{Wng Kim\} and Masahiro Hirano and Yoshimitsu Kohama and Hitoshi Kawaji and Tooru Atake and Hiroki Ikegami and Kimitoshi Kono and Hideo Hosono",

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language = "English",

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AU - Miyakawa, Masashi

AU - Sung, Wng Kim

AU - Hirano, Masahiro

AU - Kohama, Yoshimitsu

AU - Kawaji, Hitoshi

AU - Atake, Tooru

AU - Ikegami, Hiroki

AU - Kono, Kimitoshi

AU - Hosono, Hideo

PY - 2007/6/13

Y1 - 2007/6/13

N2 - An inorganic electride, 12CaO·7Al2O3:e-, synthesized by exclusively replacing oxygen ions in the sub-nanometer-sized cages of 12CaO·7Al2O3 crystal with electrons exhibits a superconducting transition at a temperature (Tc) of 0.4 K. Tc varies in the range of 0.14-0.4 K with the concentration of anionic electrons, which are primarily distributed over crystallographic spaces without occupying any particular framework ions. The precursor of electride is composed of representative metal oxides, which are electrical insulators. Thus, the exotic crystal structure of electrides provides an insight for a material platform to realize a new superconductor.

AB - An inorganic electride, 12CaO·7Al2O3:e-, synthesized by exclusively replacing oxygen ions in the sub-nanometer-sized cages of 12CaO·7Al2O3 crystal with electrons exhibits a superconducting transition at a temperature (Tc) of 0.4 K. Tc varies in the range of 0.14-0.4 K with the concentration of anionic electrons, which are primarily distributed over crystallographic spaces without occupying any particular framework ions. The precursor of electride is composed of representative metal oxides, which are electrical insulators. Thus, the exotic crystal structure of electrides provides an insight for a material platform to realize a new superconductor.

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M3 - Article

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JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 23

ER -

Superconductivity in an inorganic electride 12CaO·7Al ₂O₃:e^-

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