High-density electron anions in a nanoporous single crystal: [Ca24Al28O64]4+ (4e-)

Satoru Matsuishi, Yoshitake Toda, Masashi Miyakawa, Katsuro Hayashi, Toshio Kamiya, Masahiro Hirano, Isao Tanaka, Hideo Hosono

Research output: Contribution to journalArticle

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Abstract

We removed ∼100% of clathrated oxygen ions from the crystallographic cages in a single crystal of 12CaO·7Al2O3, leading to the formation of high-density (∼2 x 1021 cm-3) electrons highly localized in the cages. The resulting electron forms a structure that we interpret as an F+ center and migrates throughout the crystal by hopping to a neighboring cage with conductivity ∼100 siemens per centimeter, demonstrating that the encaged electron behaves as an anion. The electron anions couple antiferromagnetically with each other, forming a diamagnetic pair or singlet bipolaron. The resulting [Ca24Al28O64]4+(4e-) may be regarded as a thermally and chemically stable single crystalline "electride".

Original languageEnglish
Pages (from-to)626-629
Number of pages4
JournalScience
Volume301
Issue number5633
DOIs
Publication statusPublished - Aug 1 2003

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Anions
Carrier concentration
Single crystals
Electrons
Ions
Oxygen
Crystalline materials
Crystals

All Science Journal Classification (ASJC) codes

  • General

Cite this

Matsuishi, S., Toda, Y., Miyakawa, M., Hayashi, K., Kamiya, T., Hirano, M., ... Hosono, H. (2003). High-density electron anions in a nanoporous single crystal: [Ca24Al28O64]4+ (4e-). Science, 301(5633), 626-629. https://doi.org/10.1126/science.1083842

High-density electron anions in a nanoporous single crystal : [Ca24Al28O64]4+ (4e-). / Matsuishi, Satoru; Toda, Yoshitake; Miyakawa, Masashi; Hayashi, Katsuro; Kamiya, Toshio; Hirano, Masahiro; Tanaka, Isao; Hosono, Hideo.

In: Science, Vol. 301, No. 5633, 01.08.2003, p. 626-629.

Research output: Contribution to journalArticle

Matsuishi, S, Toda, Y, Miyakawa, M, Hayashi, K, Kamiya, T, Hirano, M, Tanaka, I & Hosono, H 2003, 'High-density electron anions in a nanoporous single crystal: [Ca24Al28O64]4+ (4e-)', Science, vol. 301, no. 5633, pp. 626-629. https://doi.org/10.1126/science.1083842
Matsuishi S, Toda Y, Miyakawa M, Hayashi K, Kamiya T, Hirano M et al. High-density electron anions in a nanoporous single crystal: [Ca24Al28O64]4+ (4e-). Science. 2003 Aug 1;301(5633):626-629. https://doi.org/10.1126/science.1083842
Matsuishi, Satoru ; Toda, Yoshitake ; Miyakawa, Masashi ; Hayashi, Katsuro ; Kamiya, Toshio ; Hirano, Masahiro ; Tanaka, Isao ; Hosono, Hideo. / High-density electron anions in a nanoporous single crystal : [Ca24Al28O64]4+ (4e-). In: Science. 2003 ; Vol. 301, No. 5633. pp. 626-629.
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AU - Matsuishi, Satoru

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AU - Tanaka, Isao

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