Magnetic Study of Pressure-Induced Superconductivity in the [Pd(dmit)_2] Salt with Spin-Gapped Ground State(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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Static magnetic measurements have been applied for the pressure-induced superconducting state in the P2_1/m phase of EtMe_3P[Pd(dmit)_2]_2 (Et = C_2H_5, Me = CH_3 and dmit^<2-> = 1,3-dithiol-2-thione-4,5-dithiolate, C_3S^<2->_5), 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>).
- 社団法人日本物理学会の論文
- 2007-03-15
著者
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Kato Reizo
Condensed Molecular Materials Laboratory Riken
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Kato Reizo
Condensed Molecular Materials Lab.
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Tamura Masafumi
Condensed Molecular Materials Laboratory Riken
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Tamura Masafumi
Condensed Molecular Materials Lab.
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ISHII Yasuyuki
Condensed Molecular Materials Laboratory, RIKEN
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Ishii Yasuyuki
Condensed Molecular Materials Laboratory Riken
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