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- W1982481794 abstract "We have measured the electrical resistivity of several quasi 1-D chalcogenides between 1.2 and 300K and from ambient pressure up to 25GPa. On NbSe3 we find that the high temperature charge density wave (CDW) transition T1 disappears at a pressure of about 3.5GPa, where the superconducting transition temperature Tc jumps to ∼5K. The similar pressure dependence of the logarithmic pressure derivative of both T1 and Tc above this pressure suggests the existence of independent superconducting states. On m-TaS3 we observe a maximum on the T1-P variation at ∼3.5GPa, that we attribute to a CDW transition temperature strongly diminished by 1-D fluctuations that are reduced at low applied pressures, with T2 behaving in a monotonous decreasing way with pressure. While on o-TaS3 the CDW that develops at 210K at ambient pressure, gives way to a superconducting state of Tc∼3K at a pressure of 6.5GPa. The behaviour of (TaSe4)2I is scaled to the precedent, with a higher critical pressure of 15GPa that induces the appearance of a superconducting state with Tc=2.5K." @default.
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- W1982481794 date "1993-04-01" @default.
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- W1982481794 title "Superconductivity under pressure in linear chalcogenides" @default.
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- W1982481794 doi "https://doi.org/10.1016/0379-6779(93)90013-m" @default.
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