Enhanced superconducting transition temperature in the water-intercalated sulfides

Naoyuki Katayama; Minoru Nohara; Fumiko Sakai; Hidenori Takagi

doi:10.1143/JPSJ.74.851

Enhanced superconducting transition temperature in the water-intercalated sulfides

Naoyuki Katayama, Minoru Nohara, Fumiko Sakai, Hidenori Takagi

Research output: Contribution to journal › Article

4 Citations (Scopus)

Abstract

Water-intercalated misfit-layer sulfides Na _x(H ₂O) _y(MS) _1+δ(TaS ₂) ₂ were found to exhibit superconductivity for M = Sn, Pb, and Sb, as well as anhydrate sulfides (MS) _1+δ(TaS ₂) ₂ with M = Pb, Sb, and Bi. The optimal transition temperature T _c was ≃3 K for the anhydrate sulfides, and was enhanced up to ≃4 K by intercalating a "bilayer" of water between the adjacent TaS ₂ layers. This indicates that the presence of water molecule is favorable to superconductivity in the sulfides as in the cobalt oxide Na _xCoO ₂· nH ₂O, for which superconductivity appears only for the "bilayer" hydrate.

Original language	English
Pages (from-to)	851-854
Number of pages	4
Journal	journal of the physical society of japan
Volume	74
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.74.851
Publication status	Published - Mar 1 2005
Externally published	Yes

Keywords

Hydrate
Intercalation
Misfit-layer compound
Sulfide
Superconductivity

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.74.851

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title = "Enhanced superconducting transition temperature in the water-intercalated sulfides",

abstract = "Water-intercalated misfit-layer sulfides Na x(H 2O) y(MS) 1+δ(TaS 2) 2 were found to exhibit superconductivity for M = Sn, Pb, and Sb, as well as anhydrate sulfides (MS) 1+δ(TaS 2) 2 with M = Pb, Sb, and Bi. The optimal transition temperature T c was ≃3 K for the anhydrate sulfides, and was enhanced up to ≃4 K by intercalating a {"}bilayer{"} of water between the adjacent TaS 2 layers. This indicates that the presence of water molecule is favorable to superconductivity in the sulfides as in the cobalt oxide Na xCoO 2· nH 2O, for which superconductivity appears only for the {"}bilayer{"} hydrate.",

keywords = "Hydrate, Intercalation, Misfit-layer compound, Sulfide, Superconductivity",

author = "Naoyuki Katayama and Minoru Nohara and Fumiko Sakai and Hidenori Takagi",

year = "2005",

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T1 - Enhanced superconducting transition temperature in the water-intercalated sulfides

AU - Katayama, Naoyuki

AU - Nohara, Minoru

AU - Sakai, Fumiko

AU - Takagi, Hidenori

PY - 2005/3/1

Y1 - 2005/3/1

N2 - Water-intercalated misfit-layer sulfides Na x(H 2O) y(MS) 1+δ(TaS 2) 2 were found to exhibit superconductivity for M = Sn, Pb, and Sb, as well as anhydrate sulfides (MS) 1+δ(TaS 2) 2 with M = Pb, Sb, and Bi. The optimal transition temperature T c was ≃3 K for the anhydrate sulfides, and was enhanced up to ≃4 K by intercalating a "bilayer" of water between the adjacent TaS 2 layers. This indicates that the presence of water molecule is favorable to superconductivity in the sulfides as in the cobalt oxide Na xCoO 2· nH 2O, for which superconductivity appears only for the "bilayer" hydrate.

AB - Water-intercalated misfit-layer sulfides Na x(H 2O) y(MS) 1+δ(TaS 2) 2 were found to exhibit superconductivity for M = Sn, Pb, and Sb, as well as anhydrate sulfides (MS) 1+δ(TaS 2) 2 with M = Pb, Sb, and Bi. The optimal transition temperature T c was ≃3 K for the anhydrate sulfides, and was enhanced up to ≃4 K by intercalating a "bilayer" of water between the adjacent TaS 2 layers. This indicates that the presence of water molecule is favorable to superconductivity in the sulfides as in the cobalt oxide Na xCoO 2· nH 2O, for which superconductivity appears only for the "bilayer" hydrate.

KW - Hydrate

KW - Intercalation

KW - Misfit-layer compound

KW - Sulfide

KW - Superconductivity

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