期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 76, 期 3, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.76.033704
关键词
Pd(dmit)(2); superconductivity; pressure; triangular antiferromagnet; valence bond order; magnetic susceptibility
Static magnetic measurements have been applied for the pressure-induced superconducting state in the P2(1)/m phase of EtMe3P[Pd(dmit)(2)](2) (Et = C2H5, Me = CH3 and dmit(2-) = 1,3-dithiol-2-thione-4,5dithiolate, 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 (T,) 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).
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