Magnetic study of pressure-induced superconductivity in the [Pd(dmit) 2] salt with spin-gapped ground state

Yasuyuki Ishii; Masafumi Tamura; Reizo Kato

doi:10.1143/JPSJ.76.033704

Magnetic study of pressure-induced superconductivity in the [Pd(dmit) ₂] salt with spin-gapped ground state

Yasuyuki Ishii, Masafumi Tamura, Reizo Kato

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

25 Citations (Scopus)

Abstract

Static magnetic measurements have been applied for the pressure-induced superconducting state in the P2₁/m phase of EtMe ₃P[Pd(dmit)₂]₂ (Et = C₂H ₅, Me = CH₃ and dmit^2- = 1,3-dithiol-2-thione- 4,5-dithiolate, C₃S₅^2-), which exhibits valence bond (VB) ordering with a spin gap at ambient pressure. Evidence for bulk superconductivity is given. The pressure dependence of the transition temperature (T_c) is obtained in the pressure range 0.2- 0.5 GPa. A possible relation between the VB order and the superconductivity is suggested on the basis of the phase diagram. The nonlinear magnetization process is analyzed to determine the behavior of the lower critical field (H_c1).

Original language	English
Article number	033704
Journal	journal of the physical society of japan
Volume	76
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.76.033704
Publication status	Published - 2007 Mar
Externally published	Yes

Keywords

Magnetic susceptibility
Pd(dmit)
Pressure
Superconductivity
Triangular antiferromagnet
Valence bond order

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.76.033704

Cite this

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title = "Magnetic study of pressure-induced superconductivity in the [Pd(dmit) 2] salt with spin-gapped ground state",

abstract = "Static magnetic measurements have been applied for the pressure-induced superconducting state in the P21/m phase of EtMe 3P[Pd(dmit)2]2 (Et = C2H 5, Me = CH3 and dmit2- = 1,3-dithiol-2-thione- 4,5-dithiolate, C3S52-), which exhibits valence bond (VB) ordering with a spin gap at ambient pressure. Evidence for bulk superconductivity is given. The pressure dependence of the transition temperature (Tc) is obtained in the pressure range 0.2- 0.5 GPa. A possible relation between the VB order and the superconductivity is suggested on the basis of the phase diagram. The nonlinear magnetization process is analyzed to determine the behavior of the lower critical field (Hc1).",

keywords = "Magnetic susceptibility, Pd(dmit), Pressure, Superconductivity, Triangular antiferromagnet, Valence bond order",

author = "Yasuyuki Ishii and Masafumi Tamura and Reizo Kato",

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doi = "10.1143/JPSJ.76.033704",

language = "English",

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journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

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T1 - Magnetic study of pressure-induced superconductivity in the [Pd(dmit) 2] salt with spin-gapped ground state

AU - Ishii, Yasuyuki

AU - Tamura, Masafumi

AU - Kato, Reizo

PY - 2007/3

Y1 - 2007/3

N2 - Static magnetic measurements have been applied for the pressure-induced superconducting state in the P21/m phase of EtMe 3P[Pd(dmit)2]2 (Et = C2H 5, Me = CH3 and dmit2- = 1,3-dithiol-2-thione- 4,5-dithiolate, C3S52-), which exhibits valence bond (VB) ordering with a spin gap at ambient pressure. Evidence for bulk superconductivity is given. The pressure dependence of the transition temperature (Tc) is obtained in the pressure range 0.2- 0.5 GPa. A possible relation between the VB order and the superconductivity is suggested on the basis of the phase diagram. The nonlinear magnetization process is analyzed to determine the behavior of the lower critical field (Hc1).

AB - Static magnetic measurements have been applied for the pressure-induced superconducting state in the P21/m phase of EtMe 3P[Pd(dmit)2]2 (Et = C2H 5, Me = CH3 and dmit2- = 1,3-dithiol-2-thione- 4,5-dithiolate, C3S52-), which exhibits valence bond (VB) ordering with a spin gap at ambient pressure. Evidence for bulk superconductivity is given. The pressure dependence of the transition temperature (Tc) is obtained in the pressure range 0.2- 0.5 GPa. A possible relation between the VB order and the superconductivity is suggested on the basis of the phase diagram. The nonlinear magnetization process is analyzed to determine the behavior of the lower critical field (Hc1).

KW - Magnetic susceptibility

KW - Pd(dmit)

KW - Pressure

KW - Superconductivity

KW - Triangular antiferromagnet

KW - Valence bond order

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