Pressure-induced superconductivity in quantum spin-ladder compound Sr14-xCaxCu24O41+δ

N. Môri; T. Nakanishi; H. Takahashi; T. Nagata; M. Uehara; J. Akimitsu; N. Motoyama; H. Eisaki; S. Uchida

doi:10.1016/S0921-4526(97)00396-7

Pressure-induced superconductivity in quantum spin-ladder compound Sr_14-xCa_xCu₂₄O_41+δ

N. Môri, T. Nakanishi, H. Takahashi, T. Nagata, M. Uehara, J. Akimitsu, N. Motoyama, H. Eisaki, S. Uchida

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

5 Citations (Scopus)

Abstract

Superconductivity in a spin-ladder system was discovered only under high pressure on the compound Sr_14-xCa_xCu₂₄O_41+δ having Cu₂O₃ ladder-layer with x from 11.5 to 13.6. Superconducting transition temperature (T_c) was found to appear suddenly under high pressure. For the single crystalline sample with x = 11.5 the T_c has a maximum temperature of about 9.5 K at around 4 GPa and decreases with pressure above it. A substantial decrease of resistivity along the a-axis was revealed by applying pressure. This result suggests that the superconductivity occurs just after the crossover from one-to two-dimensional properties takes place.

Original language	English
Pages (from-to)	137-140
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	239
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4526(97)00396-7
Publication status	Published - Aug 1 1997
Externally published	Yes

Keywords

Cuprate
High pressure
Spin-ladder compound
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(97)00396-7

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title = "Pressure-induced superconductivity in quantum spin-ladder compound Sr14-xCaxCu24O41+δ",

abstract = "Superconductivity in a spin-ladder system was discovered only under high pressure on the compound Sr14-xCaxCu24O41+δ having Cu2O3 ladder-layer with x from 11.5 to 13.6. Superconducting transition temperature (Tc) was found to appear suddenly under high pressure. For the single crystalline sample with x = 11.5 the Tc has a maximum temperature of about 9.5 K at around 4 GPa and decreases with pressure above it. A substantial decrease of resistivity along the a-axis was revealed by applying pressure. This result suggests that the superconductivity occurs just after the crossover from one-to two-dimensional properties takes place.",

keywords = "Cuprate, High pressure, Spin-ladder compound, Superconductivity",

author = "N. M{\^o}ri and T. Nakanishi and H. Takahashi and T. Nagata and M. Uehara and J. Akimitsu and N. Motoyama and H. Eisaki and S. Uchida",

year = "1997",

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T1 - Pressure-induced superconductivity in quantum spin-ladder compound Sr14-xCaxCu24O41+δ

AU - Môri, N.

AU - Nakanishi, T.

AU - Takahashi, H.

AU - Nagata, T.

AU - Uehara, M.

AU - Akimitsu, J.

AU - Motoyama, N.

AU - Eisaki, H.

AU - Uchida, S.

PY - 1997/8/1

Y1 - 1997/8/1

N2 - Superconductivity in a spin-ladder system was discovered only under high pressure on the compound Sr14-xCaxCu24O41+δ having Cu2O3 ladder-layer with x from 11.5 to 13.6. Superconducting transition temperature (Tc) was found to appear suddenly under high pressure. For the single crystalline sample with x = 11.5 the Tc has a maximum temperature of about 9.5 K at around 4 GPa and decreases with pressure above it. A substantial decrease of resistivity along the a-axis was revealed by applying pressure. This result suggests that the superconductivity occurs just after the crossover from one-to two-dimensional properties takes place.

AB - Superconductivity in a spin-ladder system was discovered only under high pressure on the compound Sr14-xCaxCu24O41+δ having Cu2O3 ladder-layer with x from 11.5 to 13.6. Superconducting transition temperature (Tc) was found to appear suddenly under high pressure. For the single crystalline sample with x = 11.5 the Tc has a maximum temperature of about 9.5 K at around 4 GPa and decreases with pressure above it. A substantial decrease of resistivity along the a-axis was revealed by applying pressure. This result suggests that the superconductivity occurs just after the crossover from one-to two-dimensional properties takes place.

KW - Cuprate

KW - High pressure

KW - Spin-ladder compound

KW - Superconductivity

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