Superconductivity in an inorganic electride 12CaO center dot 7Al(2)O(3): e(-)

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

doi:10.1021/ja0724644

Superconductivity in an inorganic electride 12CaO center dot 7Al(2)O(3): e(-)

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

^*Corresponding author for this work

International College of Semiconductor Technology

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

204 Scopus citations

Abstract

An inorganic electride, 12CaO center dot 7Al(2)O(3):e(-), synthesized by exclusively replacing oxygen ions in the sub-nanometer-sized cages of 12CaO center dot 7Al(2)O(3) crystal with electrons exhibits a superconducting transition at a temperature (T-c) of similar to 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-+
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	129
Issue number	23
DOIs	https://doi.org/10.1021/ja0724644
State	Published - May 2007

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title = "Superconductivity in an inorganic electride 12CaO center dot 7Al(2)O(3): e(-)",

abstract = "An inorganic electride, 12CaO center dot 7Al(2)O(3):e(-), synthesized by exclusively replacing oxygen ions in the sub-nanometer-sized cages of 12CaO center dot 7Al(2)O(3) crystal with electrons exhibits a superconducting transition at a temperature (T-c) of similar to 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.",

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

year = "2007",

month = may,

doi = "10.1021/ja0724644",

language = "English",

volume = "129",

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journal = "Journal of the American Chemical Society",

issn = "0002-7863",

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T1 - Superconductivity in an inorganic electride 12CaO center dot 7Al(2)O(3)

T2 - e(-)

AU - Miyakawa, Masashi

AU - Kim, Sung Wng

AU - Hirano, Masahiro

AU - Kohama, Yoshimitsu

AU - Kawaji, Hitoshi

AU - Atake, Tooru

AU - Ikegami, Hiroki

AU - Kono, Kimitoshi

AU - Hosono, Hideo

PY - 2007/5

Y1 - 2007/5

N2 - An inorganic electride, 12CaO center dot 7Al(2)O(3):e(-), synthesized by exclusively replacing oxygen ions in the sub-nanometer-sized cages of 12CaO center dot 7Al(2)O(3) crystal with electrons exhibits a superconducting transition at a temperature (T-c) of similar to 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.

AB - An inorganic electride, 12CaO center dot 7Al(2)O(3):e(-), synthesized by exclusively replacing oxygen ions in the sub-nanometer-sized cages of 12CaO center dot 7Al(2)O(3) crystal with electrons exhibits a superconducting transition at a temperature (T-c) of similar to 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.

U2 - 10.1021/ja0724644

DO - 10.1021/ja0724644

M3 - Article

SN - 0002-7863

VL - 129

SP - 7270-+

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 23

ER -

Superconductivity in an inorganic electride 12CaO center dot 7Al(2)O(3): e(-)

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