Substitution Effect by Deuterated Donors on Superconductivity in .KAPPA.-(BEDT-TTF)2Cu[N(CN)2]Br
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- Yoneyama Naoki
- Institute for Materials Research, Tohoku University
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- Sasaki Takahiko
- Institute for Materials Research, Tohoku University
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- Kobayashi Norio
- Institute for Materials Research, Tohoku University Center for Low Temperature Science, Tohoku University
Bibliographic Information
- Other Title
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- Substitution Effect by Deuterated Donors on Superconductivity in κ-(BEDT-TTF)2Cu[N(CN)2]Br
- Substitution Effect by Deuterated Donors on Superconductivity in カッパ BEDT TTF 2Cu N CN 2 Br
- Substitution Effect by Deuterated Donors on Superconductivity in κ-(BEDT-TTF)<sub>2</sub>Cu[N(CN)<sub>2</sub>]Br
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Abstract
We investigate the superconductivity in the deuterated BEDT-TTF molecular substitution system κ-[(h8-BEDT-TTF)1−x(d8-BEDT-TTF)x]2Cu[N(CN)2]Br, where h8 and d8 denote fully hydrogenated and deuterated molecules, respectively. Systematic and wide-range (x=0–1) substitution can accurately control chemical pressure near the Mott boundary, which results in the modification of the superconductivity. After cooling slowly, an increase in Tc observed up to x∼0.1 is evidently caused by the chemical pressure effect. Neither a reduction of Tc nor a suppression of superconducting volume fraction is found below x∼0.5. This demonstrates that the effect of disorder by substitution is negligible in the present system. With further increase in x, both Tc and superconducting volume fraction start to decrease toward values at x=1.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 73 (6), 1434-1437, 2004
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679162866304
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- NII Article ID
- 110001974399
- 210000104838
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- NII Book ID
- AA00704814
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- BIBCODE
- 2004JPSJ...73.1434Y
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 6973634
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed